Calculus Examples

$y = p^{\sqrt{x}}$

Step 1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{d}{d x} [p^{x^{\frac{1}{2}}}]$

Step 2

Differentiate using the Generalized Power Rule which states that $\frac{d}{d x} [f^{g}]$ is $f^{g} (f' \frac{g}{f} + g' \ln (f))$ where $f = p$ and $g = x^{\frac{1}{2}}$ .

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

Step 3

Differentiate.

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Step 3.1

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

$0 (x^{\frac{1}{2}} p^{x^{\frac{1}{2}} - 1}) + \frac{d}{d x} [x^{\frac{1}{2}}] (p^{x^{\frac{1}{2}}} \ln (p))$

Step 3.2

Simplify the expression.

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Step 3.2.1

Multiply $x^{\frac{1}{2}}$ by $0$ .

$0 p^{x^{\frac{1}{2}} - 1} + \frac{d}{d x} [x^{\frac{1}{2}}] (p^{x^{\frac{1}{2}}} \ln (p))$

Step 3.2.2

Multiply $0$ by $p^{x^{\frac{1}{2}} - 1}$ .

$0 + \frac{d}{d x} [x^{\frac{1}{2}}] (p^{x^{\frac{1}{2}}} \ln (p))$

Step 3.2.3

Add $0$ and $\frac{d}{d x} [x^{\frac{1}{2}}] (p^{x^{\frac{1}{2}}} \ln (p))$ .

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

Step 3.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = \frac{1}{2}$ .

$\frac{1}{2} x^{\frac{1}{2} - 1} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 4

To write $- 1$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{1}{2} x^{\frac{1}{2} - 1 \cdot \frac{2}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 5

Combine $- 1$ and $\frac{2}{2}$ .

$\frac{1}{2} x^{\frac{1}{2} + \frac{- 1 \cdot 2}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 6

Combine the numerators over the common denominator.

$\frac{1}{2} x^{\frac{1 - 1 \cdot 2}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 7

Simplify the numerator.

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Step 7.1

Multiply $- 1$ by $2$ .

$\frac{1}{2} x^{\frac{1 - 2}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 7.2

Subtract $2$ from $1$ .

$\frac{1}{2} x^{\frac{- 1}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 8

Move the negative in front of the fraction.

$\frac{1}{2} x^{- \frac{1}{2}} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 9

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

$\frac{x^{- \frac{1}{2}}}{2} (p^{x^{\frac{1}{2}}} \ln (p))$

Step 10

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

$\frac{p^{x^{\frac{1}{2}}} x^{- \frac{1}{2}}}{2} \ln (p)$

Step 11

Combine $\frac{p^{x^{\frac{1}{2}}} x^{- \frac{1}{2}}}{2}$ and $\ln (p)$ .

$\frac{p^{x^{\frac{1}{2}}} x^{- \frac{1}{2}} \ln (p)}{2}$

Step 12

Move $x^{- \frac{1}{2}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{p^{x^{\frac{1}{2}}} \ln (p)}{2 x^{\frac{1}{2}}}$