Calculus Examples

$f (x) = {(2 x)}^{x}$

Step 1

Find the first derivative of the function.

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Step 1.1

Simplify with factoring out.

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Step 1.1.1

Factor $2$ out of $2 x$ .

$\frac{d}{d x} [{(2 (x))}^{x}]$

Step 1.1.2

Apply the product rule to $2 (x)$ .

$\frac{d}{d x} [2^{x} x^{x}]$

Step 1.2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x}$ and $g (x) = x^{x}$ .

$2^{x} \frac{d}{d x} [x^{x}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.3

Use the properties of logarithms to simplify the differentiation.

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Step 1.3.1

Rewrite $x^{x}$ as $e^{\ln (x^{x})}$ .

$2^{x} \frac{d}{d x} [e^{\ln (x^{x})}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.3.2

Expand $\ln (x^{x})$ by moving $x$ outside the logarithm.

$2^{x} \frac{d}{d x} [e^{x \ln (x)}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = e^{x}$ and $g (x) = x \ln (x)$ .

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Step 1.4.1

To apply the Chain Rule, set $u$ as $x \ln (x)$ .

$2^{x} (\frac{d}{d u} [e^{u}] \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.4.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u} [a^{u}]$ is $a^{u} \ln (a)$ where $a$ = $e$ .

$2^{x} (e^{u} \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.4.3

Replace all occurrences of $u$ with $x \ln (x)$ .

$2^{x} (e^{x \ln (x)} \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.5

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \ln (x)$ .

$2^{x} (e^{x \ln (x)} (x \frac{d}{d x} [\ln (x)] + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.6

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

$2^{x} (e^{x \ln (x)} (x \frac{1}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.7

Differentiate using the Power Rule.

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Step 1.7.1

Combine $x$ and $\frac{1}{x}$ .

$2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.7.2

Cancel the common factor of $x$ .

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Step 1.7.2.1

Cancel the common factor.

$2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.7.2.2

Rewrite the expression.

$2^{x} (e^{x \ln (x)} (1 + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.7.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x) \cdot 1)) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.7.4

Multiply $\ln (x)$ by $1$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} \frac{d}{d x} [2^{x}]$

Step 1.8

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $2$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2))$

Step 1.9

Simplify.

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Step 1.9.1

Apply the distributive property.

$2^{x} (e^{x \ln (x)} \cdot 1 + e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 1.9.2

Apply the distributive property.

$2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 1.9.3

Multiply $e^{x \ln (x)}$ by $1$ .

$2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 1.9.4

Reorder terms.

$2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2)$

Step 2

Find the second derivative of the function.

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Step 2.1

By the Sum Rule, the derivative of $2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2)$ with respect to $x$ is $\frac{d}{d x} [2^{x} e^{x \ln (x)}] + \frac{d}{d x} [2^{x} e^{x \ln (x)} \ln (x)] + \frac{d}{d x} [2^{x} x^{x} \ln (2)]$ .

$f'' (x) = \frac{d}{d x} (2^{x} e^{x \ln (x)}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2

Evaluate $\frac{d}{d x} [2^{x} e^{x \ln (x)}]$ .

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Step 2.2.1

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x}$ and $g (x) = e^{x \ln (x)}$ .

$f'' (x) = 2^{x} \frac{d}{d x} (e^{x \ln (x)}) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.2

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = e^{x}$ and $g (x) = x \ln (x)$ .

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Step 2.2.2.1

To apply the Chain Rule, set $u_{1}$ as $x \ln (x)$ .

$f'' (x) = 2^{x} (\frac{d}{d u (1)} (e^{u_{1}}) \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.2.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{1}} [a^{u_{1}}]$ is $a^{u_{1}} \ln (a)$ where $a$ = $e$ .

$f'' (x) = 2^{x} (e^{u_{1}} \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.2.3

Replace all occurrences of $u_{1}$ with $x \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.3

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (x \frac{d}{d x} (\ln (x)) + \ln (x) \frac{d}{d x} (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.4

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \frac{d}{d x} (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.5

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} \frac{d}{d x} (2^{x}) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.6

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $2$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.7

Combine $x$ and $\frac{1}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.8

Cancel the common factor of $x$ .

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Step 2.2.8.1

Cancel the common factor.

$f'' (x) = 2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.8.2

Rewrite the expression.

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.2.9

Multiply $\ln (x)$ by $1$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{d}{d x} (2^{x} e^{x \ln (x)} \ln (x)) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3

Evaluate $\frac{d}{d x} [2^{x} e^{x \ln (x)} \ln (x)]$ .

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Step 2.3.1

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x} e^{x \ln (x)}$ and $g (x) = \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} \frac{d}{d x} (\ln (x)) + \ln (x) \frac{d}{d x} (2^{x} e^{x \ln (x)}) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.2

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) \frac{d}{d x} (2^{x} e^{x \ln (x)}) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.3

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x}$ and $g (x) = e^{x \ln (x)}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} \frac{d}{d x} (e^{x \ln (x)}) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = e^{x}$ and $g (x) = x \ln (x)$ .

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Step 2.3.4.1

To apply the Chain Rule, set $u_{2}$ as $x \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (\frac{d}{d u (2)} (e^{u_{2}}) \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.4.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{2}} [a^{u_{2}}]$ is $a^{u_{2}} \ln (a)$ where $a$ = $e$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{u_{2}} \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.4.3

Replace all occurrences of $u_{2}$ with $x \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{x \ln (x)} \frac{d}{d x} (x \ln (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.5

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \ln (x)$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{x \ln (x)} (x \frac{d}{d x} (\ln (x)) + \ln (x) \frac{d}{d x} (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.6

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \frac{d}{d x} (x))) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.7

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} \frac{d}{d x} (2^{x})) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.8

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $2$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + 2^{x} e^{x \ln (x)} (\frac{1}{x}) + \ln (x) (2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.9

Combine $\frac{1}{x}$ and $2^{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x}}{x} \cdot e^{x \ln (x)} + \ln (x) (2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.10

Combine $\frac{2^{x}}{x}$ and $e^{x \ln (x)}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + \ln (x) (2^{x} (e^{x \ln (x)} (x (\frac{1}{x}) + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.11

Combine $x$ and $\frac{1}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + \ln (x) (2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.12

Cancel the common factor of $x$ .

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Step 2.3.12.1

Cancel the common factor.

Step 2.3.12.2

Rewrite the expression.

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + \ln (x) (2^{x} (e^{x \ln (x)} (1 + \ln (x) \cdot 1)) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.13

Multiply $\ln (x)$ by $1$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + \ln (x) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.14

Reorder the factors of $\ln (x) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)))$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.15

To write $(2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x)$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)}}{x} + \frac{(2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.3.16

Combine the numerators over the common denominator.

$f'' (x) = 2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \frac{d}{d x} (2^{x} x^{x} \ln (2))$

Step 2.4

Evaluate $\frac{d}{d x} [2^{x} x^{x} \ln (2)]$ .

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Step 2.4.1

Since $\ln (2)$ is constant with respect to $x$ , the derivative of $2^{x} x^{x} \ln (2)$ with respect to $x$ is $\ln (2) \frac{d}{d x} [2^{x} x^{x}]$ .

Step 2.4.2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x}$ and $g (x) = x^{x}$ .

Step 2.4.3

Use the properties of logarithms to simplify the differentiation.

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Step 2.4.3.1

Rewrite $x^{x}$ as $e^{\ln (x^{x})}$ .

Step 2.4.3.2

Expand $\ln (x^{x})$ by moving $x$ outside the logarithm.

Step 2.4.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = e^{x}$ and $g (x) = x \ln (x)$ .

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Step 2.4.4.1

To apply the Chain Rule, set $u_{3}$ as $x \ln (x)$ .

Step 2.4.4.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{3}} [a^{u_{3}}]$ is $a^{u_{3}} \ln (a)$ where $a$ = $e$ .

Step 2.4.4.3

Replace all occurrences of $u_{3}$ with $x \ln (x)$ .

Step 2.4.5

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \ln (x)$ .

Step 2.4.6

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

Step 2.4.7

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

Step 2.4.8

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $2$ .

Step 2.4.9

Combine $x$ and $\frac{1}{x}$ .

Step 2.4.10

Cancel the common factor of $x$ .

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Step 2.4.10.1

Cancel the common factor.

Step 2.4.10.2

Rewrite the expression.

Step 2.4.11

Multiply $\ln (x)$ by $1$ .

Step 2.5

Simplify.

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Step 2.5.1

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1 + e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.2

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.3

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} \cdot 1 + e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.4

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2))) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.5

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + (2^{x} (e^{x \ln (x)} \cdot 1) \ln (x) + 2^{x} (e^{x \ln (x)} \ln (x)) \ln (x) + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x)) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.6

Apply the distributive property.

$f'' (x) = 2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \cdot 1) \ln (x) x + 2^{x} (e^{x \ln (x)} \ln (x)) \ln (x) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2)))$

Step 2.5.7

Apply the distributive property.

Step 2.5.8

Apply the distributive property.

Step 2.5.9

Apply the distributive property.

Step 2.5.10

Combine terms.

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Step 2.5.10.1

Multiply $e^{x \ln (x)}$ by $1$ .

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \cdot 1) \ln (x) x + 2^{x} (e^{x \ln (x)} \ln (x)) \ln (x) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.2

Multiply $e^{x \ln (x)}$ by $1$ .

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln (x)) \ln (x) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.3

Raise $\ln (x)$ to the power of $1$ .

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} ((\ln (x)) \ln (x))) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.4

Raise $\ln (x)$ to the power of $1$ .

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} ((\ln (x)) (\ln (x)))) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.5

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} {(\ln (x))}^{1 + 1}) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.6

Add $1$ and $1$ .

$f'' (x) = 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.7

To write $2^{x} e^{x \ln (x)}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$f'' (x) = 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} x}{x} + \frac{2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.8

Combine the numerators over the common denominator.

$f'' (x) = 2^{x} (e^{x \ln (x)} \ln (x)) + e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.9

To write $2^{x} (e^{x \ln (x)} \ln (x))$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$f'' (x) = e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} (e^{x \ln (x)} \ln (x)) x}{x} + \frac{2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.10

Combine the numerators over the common denominator.

$f'' (x) = e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} (e^{x \ln (x)} \ln (x)) x + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) x + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.11

Move $e^{x \ln (x)}$ .

$f'' (x) = e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{x} x e^{x \ln (x)} \ln (x) + 2^{x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.12

Add $2^{x} x e^{x \ln (x)} \ln (x)$ and $2^{x} x e^{x \ln (x)} \ln (x)$ .

$f'' (x) = e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2 \cdot (2^{x} x e^{x \ln (x)} \ln (x)) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.13

Multiply $2$ by $2^{x}$ .

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Step 2.5.10.13.1

Raise $2$ to the power of $1$ .

Step 2.5.10.13.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f'' (x) = e^{x \ln (x)} (2^{x} \ln (2)) + \frac{2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.14

To write $e^{x \ln (x)} (2^{x} \ln (2))$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x}{x} + \frac{2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.15

Combine the numerators over the common denominator.

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} (e^{x \ln (x)} \cdot 1)) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.16

Multiply $e^{x \ln (x)}$ by $1$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) (2^{x} e^{x \ln (x)}) + \ln (2) (2^{x} (e^{x \ln (x)} \ln (x))) + \ln (2) (x^{x} (2^{x} \ln (2)))$

Step 2.5.10.17

Raise $\ln (2)$ to the power of $1$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} e^{x \ln (x)}) + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} ((\ln (2)) \ln (2)))$

Step 2.5.10.18

Raise $\ln (2)$ to the power of $1$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} e^{x \ln (x)}) + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} ((\ln (2)) (\ln (2))))$

Step 2.5.10.19

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} e^{x \ln (x)}) + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} {(\ln (2))}^{1 + 1})$

Step 2.5.10.20

Add $1$ and $1$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} e^{x \ln (x)}) + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.21

To write $\ln (2) \cdot 2^{x} e^{x \ln (x)}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} e^{x \ln (x)}) \cdot \frac{x}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.22

Combine $\ln (2) \cdot 2^{x} e^{x \ln (x)}$ and $\frac{x}{x}$ .

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \frac{\ln (2) \cdot (2^{x} e^{x \ln (x)} x)}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.23

Combine the numerators over the common denominator.

$f'' (x) = \frac{e^{x \ln (x)} (2^{x} \ln (2)) x + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x + \ln (2) \cdot (2^{x} e^{x \ln (x)} x)}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.24

Move $e^{x \ln (x)}$ .

$f'' (x) = \frac{(2^{x}) x e^{x \ln (x)} \ln (2) + 2^{x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.25

Add $(2^{x}) x e^{x \ln (x)} \ln (2)$ and $2^{x} x e^{x \ln (x)} \ln (2)$ .

$f'' (x) = \frac{2 \cdot (2^{x} x e^{x \ln (x)} \ln (2)) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.26

Multiply $2$ by $2^{x}$ .

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Step 2.5.10.26.1

Raise $2$ to the power of $1$ .

Step 2.5.10.26.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x))) + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.27

To write $\ln (2) \cdot 2^{x} (e^{x \ln (x)} \ln (x))$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

Step 2.5.10.28

Combine $\ln (2) \cdot 2^{x} (e^{x \ln (x)} \ln (x))$ and $\frac{x}{x}$ .

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x}{x} + \frac{\ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x)) x)}{x} + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.29

Combine the numerators over the common denominator.

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + e^{x \ln (x)} (2^{x} \ln (2)) \ln (x) x + \ln (2) \cdot (2^{x} (e^{x \ln (x)} \ln (x)) x)}{x} + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.30

Move $e^{x \ln (x)}$ .

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + (2^{x}) x e^{x \ln (x)} \ln (2) \ln (x) + (2^{x}) x e^{x \ln (x)} \ln (2) \ln (x)}{x} + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.31

Add $(2^{x}) x e^{x \ln (x)} \ln (2) \ln (x)$ and $(2^{x}) x e^{x \ln (x)} \ln (2) \ln (x)$ .

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + 2 \cdot (2^{x} x e^{x \ln (x)} \ln (2) \ln (x))}{x} + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.32

Multiply $2$ by $2^{x}$ .

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Step 2.5.10.32.1

Raise $2$ to the power of $1$ .

Step 2.5.10.32.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$f'' (x) = \frac{2^{1 + x} x e^{x \ln (x)} \ln (2) + 2^{1 + x} x e^{x \ln (x)} \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln^{2} (x)) x + 2^{1 + x} x e^{x \ln (x)} \ln (2) \ln (x)}{x} + x^{x} (2^{x} \ln^{2} (2))$

Step 2.5.10.33

To write $x^{x} (2^{x} \ln^{2} (2))$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

Step 2.5.10.34

Combine the numerators over the common denominator.

Step 2.5.10.35

Raise $x$ to the power of $1$ .

Step 2.5.10.36

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

Step 2.5.11

Reorder terms.

$f'' (x) = \frac{2^{1 + x} e^{x \ln (x)} x \ln (2) + 2^{1 + x} e^{x \ln (x)} x \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} x \ln^{2} (x) + 2^{1 + x} e^{x \ln (x)} x \ln (2) \ln (x) + 2^{x} x^{1 + x} \ln^{2} (2)}{x}$

Step 2.5.12

Reorder factors in $\frac{2^{1 + x} e^{x \ln (x)} x \ln (2) + 2^{1 + x} e^{x \ln (x)} x \ln (x) + 2^{x} e^{x \ln (x)} x + 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} x \ln^{2} (x) + 2^{1 + x} e^{x \ln (x)} x \ln (2) \ln (x) + 2^{x} x^{1 + x} \ln^{2} (2)}{x}$ .

$f'' (x) = \frac{x \cdot (2^{1 + x} e^{x \ln (x)} \ln (2)) + x \cdot (2^{1 + x} e^{x \ln (x)} \ln (x)) + x \cdot (2^{x} e^{x \ln (x)}) + 2^{x} e^{x \ln (x)} + x \cdot (2^{x} e^{x \ln (x)} \ln^{2} (x)) + x \cdot (2^{1 + x} e^{x \ln (x)} \ln (2) \ln (x)) + 2^{x} x^{1 + x} \ln^{2} (2)}{x}$

Step 3

To find the local maximum and minimum values of the function, set the derivative equal to $0$ and solve.

$2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2) = 0$

Step 4

Find the first derivative.

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Step 4.1

Find the first derivative.

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Step 4.1.1

Simplify with factoring out.

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Step 4.1.1.1

Factor $2$ out of $2 x$ .

$\frac{d}{d x} [{(2 (x))}^{x}]$

Step 4.1.1.2

Apply the product rule to $2 (x)$ .

$\frac{d}{d x} [2^{x} x^{x}]$

Step 4.1.2

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = 2^{x}$ and $g (x) = x^{x}$ .

$2^{x} \frac{d}{d x} [x^{x}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.3

Use the properties of logarithms to simplify the differentiation.

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Step 4.1.3.1

Rewrite $x^{x}$ as $e^{\ln (x^{x})}$ .

$2^{x} \frac{d}{d x} [e^{\ln (x^{x})}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.3.2

Expand $\ln (x^{x})$ by moving $x$ outside the logarithm.

$2^{x} \frac{d}{d x} [e^{x \ln (x)}] + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = e^{x}$ and $g (x) = x \ln (x)$ .

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Step 4.1.4.1

To apply the Chain Rule, set $u$ as $x \ln (x)$ .

$2^{x} (\frac{d}{d u} [e^{u}] \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.4.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u} [a^{u}]$ is $a^{u} \ln (a)$ where $a$ = $e$ .

$2^{x} (e^{u} \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.4.3

Replace all occurrences of $u$ with $x \ln (x)$ .

$2^{x} (e^{x \ln (x)} \frac{d}{d x} [x \ln (x)]) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.5

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = \ln (x)$ .

$2^{x} (e^{x \ln (x)} (x \frac{d}{d x} [\ln (x)] + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.6

The derivative of $\ln (x)$ with respect to $x$ is $\frac{1}{x}$ .

$2^{x} (e^{x \ln (x)} (x \frac{1}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.7

Differentiate using the Power Rule.

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Step 4.1.7.1

Combine $x$ and $\frac{1}{x}$ .

$2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.7.2

Cancel the common factor of $x$ .

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Step 4.1.7.2.1

Cancel the common factor.

$2^{x} (e^{x \ln (x)} (\frac{x}{x} + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.7.2.2

Rewrite the expression.

$2^{x} (e^{x \ln (x)} (1 + \ln (x) \frac{d}{d x} [x])) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.7.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x) \cdot 1)) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.7.4

Multiply $\ln (x)$ by $1$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} \frac{d}{d x} [2^{x}]$

Step 4.1.8

Differentiate using the Exponential Rule which states that $\frac{d}{d x} [a^{x}]$ is $a^{x} \ln (a)$ where $a$ = $2$ .

$2^{x} (e^{x \ln (x)} (1 + \ln (x))) + x^{x} (2^{x} \ln (2))$

Step 4.1.9

Simplify.

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Step 4.1.9.1

Apply the distributive property.

$2^{x} (e^{x \ln (x)} \cdot 1 + e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 4.1.9.2

Apply the distributive property.

$2^{x} (e^{x \ln (x)} \cdot 1) + 2^{x} (e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 4.1.9.3

Multiply $e^{x \ln (x)}$ by $1$ .

$2^{x} e^{x \ln (x)} + 2^{x} (e^{x \ln (x)} \ln (x)) + x^{x} (2^{x} \ln (2))$

Step 4.1.9.4

Reorder terms.

$f' (x) = 2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2)$

Step 4.2

The first derivative of $f (x)$ with respect to $x$ is $2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2)$ .

$2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2)$

Step 5

Set the first derivative equal to $0$ then solve the equation $2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2) = 0$ .

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Step 5.1

Set the first derivative equal to $0$ .

$2^{x} e^{x \ln (x)} + 2^{x} e^{x \ln (x)} \ln (x) + 2^{x} x^{x} \ln (2) = 0$

Step 5.2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 0.18393972$

Step 6

Find the values where the derivative is undefined.

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Step 6.1

Set the argument in $\ln (x)$ less than or equal to $0$ to find where the expression is undefined.

$x \leq 0$

Step 6.2

The equation is undefined where the denominator equals $0$ , the argument of a square root is less than $0$ , or the argument of a logarithm is less than or equal to $0$ .

$x \leq 0$

$(- \infty, 0]$

$x \leq 0$

$(- \infty, 0]$

Step 7

Critical points to evaluate.

$x = 0.18393972$

Step 8

Evaluate the second derivative at $x = 0.18393972$ . If the second derivative is positive, then this is a local minimum. If it is negative, then this is a local maximum.

$\frac{0.18393972 \cdot (2^{1 + 0.18393972} e^{(0.18393972) \ln (0.18393972)} \ln (2)) + 0.18393972 \cdot (2^{1 + 0.18393972} e^{(0.18393972) \ln (0.18393972)} \ln (0.18393972)) + (0.18393972) \cdot (2^{0.18393972} e^{(0.18393972) \ln (0.18393972)}) + 2^{0.18393972} e^{(0.18393972) \ln (0.18393972)} + (0.18393972) \cdot (2^{0.18393972} e^{(0.18393972) \ln (0.18393972)} \ln^{2} (0.18393972)) + 0.18393972 \cdot (2^{1 + 0.18393972} e^{(0.18393972) \ln (0.18393972)} \ln (2) \ln (0.18393972)) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9

Evaluate the second derivative.

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Step 9.1

Remove parentheses.

Step 9.2

Simplify the numerator.

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Step 9.2.1

Add $1$ and $0.18393972$ .

$\frac{0.18393972 \cdot 2^{1.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.2

Raise $2$ to the power of $1.18393972$ .

$\frac{0.18393972 \cdot 2.27196359 e^{0.18393972 \ln (0.18393972)} \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.3

Multiply $0.18393972$ by $2.27196359$ .

$\frac{0.41790434 e^{0.18393972 \ln (0.18393972)} \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.4

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{0.41790434 e^{\ln ({0.18393972}^{0.18393972})} \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.5

Exponentiation and log are inverse functions.

$\frac{0.41790434 \cdot {0.18393972}^{0.18393972} \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.6

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{0.41790434 \cdot 0.73239373 \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.7

Multiply $0.41790434$ by $0.73239373$ .

$\frac{0.30607052 \ln (2) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.8

Simplify $0.30607052 \ln (2)$ by moving $0.30607052$ inside the logarithm.

$\frac{\ln (2^{0.30607052}) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.9

Raise $2$ to the power of $0.30607052$ .

$\frac{\ln (1.23633569) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.10

Add $1$ and $0.18393972$ .

$\frac{\ln (1.23633569) + 0.18393972 \cdot 2^{1.18393972} e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.11

Raise $2$ to the power of $1.18393972$ .

$\frac{\ln (1.23633569) + 0.18393972 \cdot 2.27196359 e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.12

Multiply $0.18393972$ by $2.27196359$ .

$\frac{\ln (1.23633569) + 0.41790434 e^{0.18393972 \ln (0.18393972)} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.13

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{\ln (1.23633569) + 0.41790434 e^{\ln ({0.18393972}^{0.18393972})} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.14

Exponentiation and log are inverse functions.

$\frac{\ln (1.23633569) + 0.41790434 \cdot {0.18393972}^{0.18393972} \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.15

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + 0.41790434 \cdot 0.73239373 \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.16

Multiply $0.41790434$ by $0.73239373$ .

$\frac{\ln (1.23633569) + 0.30607052 \ln (0.18393972) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.17

Simplify $0.30607052 \ln (0.18393972)$ by moving $0.30607052$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln ({0.18393972}^{0.30607052}) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.18

Raise $0.18393972$ to the power of $0.30607052$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.19

Raise $2$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.18393972 \cdot 1.13598179 e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.20

Multiply $0.18393972$ by $1.13598179$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.20895217 e^{0.18393972 \ln (0.18393972)} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.21

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.20895217 e^{\ln ({0.18393972}^{0.18393972})} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.22

Exponentiation and log are inverse functions.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.20895217 \cdot {0.18393972}^{0.18393972} + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.23

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.20895217 \cdot 0.73239373 + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.24

Multiply $0.20895217$ by $0.73239373$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.25

Raise $2$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 1.13598179 e^{0.18393972 \ln (0.18393972)} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.26

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 1.13598179 e^{\ln ({0.18393972}^{0.18393972})} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.27

Exponentiation and log are inverse functions.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 1.13598179 \cdot {0.18393972}^{0.18393972} + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.28

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 1.13598179 \cdot 0.73239373 + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.29

Multiply $1.13598179$ by $0.73239373$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.18393972 \cdot 2^{0.18393972} e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.30

Raise $2$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.18393972 \cdot 1.13598179 e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.31

Multiply $0.18393972$ by $1.13598179$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.20895217 e^{0.18393972 \ln (0.18393972)} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.32

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.20895217 e^{\ln ({0.18393972}^{0.18393972})} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.33

Exponentiation and log are inverse functions.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.20895217 \cdot {0.18393972}^{0.18393972} \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.34

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.20895217 \cdot 0.73239373 \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.35

Multiply $0.20895217$ by $0.73239373$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.15303526 \ln^{2} (0.18393972) + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.36

Multiply $0.15303526$ by $\ln^{2} (0.18393972)$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.18393972 \cdot 2^{1 + 0.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.37

Add $1$ and $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.18393972 \cdot 2^{1.18393972} e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.38

Raise $2$ to the power of $1.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.18393972 \cdot 2.27196359 e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.39

Multiply $0.18393972$ by $2.27196359$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.41790434 e^{0.18393972 \ln (0.18393972)} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.40

Simplify $0.18393972 \ln (0.18393972)$ by moving $0.18393972$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.41790434 e^{\ln ({0.18393972}^{0.18393972})} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.41

Exponentiation and log are inverse functions.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.41790434 \cdot {0.18393972}^{0.18393972} \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.42

Raise $0.18393972$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.41790434 \cdot 0.73239373 \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.43

Multiply $0.41790434$ by $0.73239373$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + 0.30607052 \ln (2) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.44

Simplify $0.30607052 \ln (2)$ by moving $0.30607052$ inside the logarithm.

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (2^{0.30607052}) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.45

Raise $2$ to the power of $0.30607052$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 2^{0.18393972} \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.46

Raise $2$ to the power of $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 1.13598179 \cdot {0.18393972}^{1 + 0.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.47

Add $1$ and $0.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 1.13598179 \cdot {0.18393972}^{1.18393972} \ln^{2} (2)}{0.18393972}$

Step 9.2.48

Raise $0.18393972$ to the power of $1.18393972$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 1.13598179 \cdot 0.13471629 \ln^{2} (2)}{0.18393972}$

Step 9.2.49

Multiply $1.13598179$ by $0.13471629$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 0.15303526 \ln^{2} (2)}{0.18393972}$

Step 9.2.50

Multiply $0.15303526$ by $\ln^{2} (2)$ .

$\frac{\ln (1.23633569) + \ln (0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 0.07352625}{0.18393972}$

Step 9.2.51

Use the product property of logarithms, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\frac{\ln (1.23633569 \cdot 0.59557827) + 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 0.07352625}{0.18393972}$

Step 9.2.52

Add $\ln (1.23633569 \cdot 0.59557827)$ and $0.15303526$ .

$\frac{- 0.15303526 + 0.83198595 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 0.07352625}{0.18393972}$

Step 9.2.53

Add $- 0.15303526$ and $0.83198595$ .

$\frac{0.67895069 + 0.43871344 + \ln (1.23633569) \ln (0.18393972) + 0.07352625}{0.18393972}$

Step 9.2.54

Add $0.67895069$ and $0.43871344$ .

$\frac{1.11766413 + \ln (1.23633569) \ln (0.18393972) + 0.07352625}{0.18393972}$

Step 9.2.55

Add $1.11766413$ and $\ln (1.23633569) \ln (0.18393972)$ .

$\frac{0.7584597 + 0.07352625}{0.18393972}$

Step 9.2.56

Add $0.7584597$ and $0.07352625$ .

$\frac{0.83198595}{0.18393972}$

Step 9.3

Divide $0.83198595$ by $0.18393972$ .

$4.52314459$

Step 10

$x = 0.18393972$ is a local minimum because the value of the second derivative is positive. This is referred to as the second derivative test.

$x = 0.18393972$ is a local minimum

Step 11

Find the y-value when $x = 0.18393972$ .

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Step 11.1

Replace the variable $x$ with $0.18393972$ in the expression.

$f (0.18393972) = {(2 (0.18393972))}^{0.18393972}$

Step 11.2

Simplify the result.

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Step 11.2.1

Multiply $2$ by $0.18393972$ .

$f (0.18393972) = {0.36787944}^{0.18393972}$

Step 11.2.2

Raise $0.36787944$ to the power of $0.18393972$ .

$f (0.18393972) = 0.83198595$

Step 11.2.3

The final answer is $0.83198595$ .

$y = 0.83198595$

Step 12

These are the local extrema for $f (x) = {(2 x)}^{x}$ .

$(0.18393972, 0.83198595)$ is a local minima

Step 13