Calculus Examples

${(1 + x)}^{\cot (x)}$

Step 1

Use the properties of logarithms to simplify the differentiation.

Tap for more steps...

Step 1.1

Rewrite ${(1 + x)}^{\cot (x)}$ as $e^{\ln ({(1 + x)}^{\cot (x)})}$ .

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

Step 1.2

Expand $\ln ({(1 + x)}^{\cot (x)})$ by moving $\cot (x)$ outside the logarithm.

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

Step 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 $g (x) = \cot (x) \ln (1 + x)$ .

Tap for more steps...

Step 2.1

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

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

Step 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 $a$ = $e$ .

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

Step 2.3

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

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

Step 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 $f (x) = \cot (x)$ and $g (x) = \ln (1 + x)$ .

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

Step 4

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = \ln (x)$ and $g (x) = 1 + x$ .

Tap for more steps...

Step 4.1

To apply the Chain Rule, set $u_{2}$ as $1 + x$ .

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

Step 4.2

The derivative of $\ln (u_{2})$ with respect to $u_{2}$ is $\frac{1}{u_{2}}$ .

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

Step 4.3

Replace all occurrences of $u_{2}$ with $1 + x$ .

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

Step 5

Differentiate.

Tap for more steps...

Step 5.1

Combine $\frac{1}{1 + x}$ and $\cot (x)$ .

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

Step 5.2

By the Sum Rule, the derivative of $1 + x$ with respect to $x$ is $\frac{d}{d x} [1] + \frac{d}{d x} [x]$ .

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

Step 5.3

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$e^{\cot (x) \ln (1 + x)} (\frac{\cot (x)}{1 + x} (0 + \frac{d}{d x} [x]) + \ln (1 + x) \frac{d}{d x} [\cot (x)])$

Step 5.4

Add $0$ and $\frac{d}{d x} [x]$ .

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

Step 5.5

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

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

Step 5.6

Multiply $\frac{\cot (x)}{1 + x}$ by $1$ .

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

Step 6

The derivative of $\cot (x)$ with respect to $x$ is $- \csc^{2} (x)$ .

$e^{\cot (x) \ln (1 + x)} (\frac{\cot (x)}{1 + x} + \ln (1 + x) (- \csc^{2} (x)))$

Step 7

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

$e^{\cot (x) \ln (1 + x)} (\frac{\cot (x)}{1 + x} + \frac{\ln (1 + x) (- \csc^{2} (x)) (1 + x)}{1 + x})$

Step 8

Combine the numerators over the common denominator.

$e^{\cot (x) \ln (1 + x)} \frac{\cot (x) + \ln (1 + x) (- \csc^{2} (x)) (1 + x)}{1 + x}$

Step 9

Combine $e^{\cot (x) \ln (1 + x)}$ and $\frac{\cot (x) + \ln (1 + x) (- \csc^{2} (x)) (1 + x)}{1 + x}$ .

$\frac{e^{\cot (x) \ln (1 + x)} (\cot (x) + \ln (1 + x) (- \csc^{2} (x)) (1 + x))}{1 + x}$

Step 10

Simplify.

Tap for more steps...

Step 10.1

Simplify the numerator.

Tap for more steps...

Step 10.1.1

Simplify each term.

Tap for more steps...

Step 10.1.1.1

Rewrite using the commutative property of multiplication.

$\frac{e^{\cot (x) \ln (1 + x)} (\cot (x) - \ln (1 + x) \csc^{2} (x) (1 + x))}{1 + x}$

Step 10.1.1.2

Apply the distributive property.

$\frac{e^{\cot (x) \ln (1 + x)} (\cot (x) - \ln (1 + x) \csc^{2} (x) \cdot 1 - \ln (1 + x) \csc^{2} (x) x)}{1 + x}$

Step 10.1.1.3

Multiply $- 1$ by $1$ .

$\frac{e^{\cot (x) \ln (1 + x)} (\cot (x) - \ln (1 + x) \csc^{2} (x) - \ln (1 + x) \csc^{2} (x) x)}{1 + x}$

Step 10.1.2

Apply the distributive property.

$\frac{e^{\cot (x) \ln (1 + x)} \cot (x) + e^{\cot (x) \ln (1 + x)} (- \ln (1 + x) \csc^{2} (x)) + e^{\cot (x) \ln (1 + x)} (- \ln (1 + x) \csc^{2} (x) x)}{1 + x}$

Step 10.1.3

Simplify.

Tap for more steps...

Step 10.1.3.1

Rewrite using the commutative property of multiplication.

$\frac{e^{\cot (x) \ln (1 + x)} \cot (x) - e^{\cot (x) \ln (1 + x)} \ln (1 + x) \csc^{2} (x) + e^{\cot (x) \ln (1 + x)} (- \ln (1 + x) \csc^{2} (x) x)}{1 + x}$

Step 10.1.3.2

Rewrite using the commutative property of multiplication.

$\frac{e^{\cot (x) \ln (1 + x)} \cot (x) - e^{\cot (x) \ln (1 + x)} \ln (1 + x) \csc^{2} (x) - e^{\cot (x) \ln (1 + x)} \ln (1 + x) \csc^{2} (x) x}{1 + x}$

Step 10.1.4

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

$\frac{e^{\cot (x) \ln (1 + x)} \cot (x) - e^{\cot (x) \ln (1 + x)} \ln (1 + x) \csc^{2} (x) - x e^{\cot (x) \ln (1 + x)} \ln (1 + x) \csc^{2} (x)}{1 + x}$

Step 10.2

Reorder terms.

$\frac{e^{\cot (x) \ln (1 + x)} \cot (x) - e^{\cot (x) \ln (1 + x)} \csc^{2} (x) \ln (1 + x) - e^{\cot (x) \ln (1 + x)} x \csc^{2} (x) \ln (1 + x)}{x + 1}$