Calculus Examples

$z = w^{\frac{3}{2}} (w + c e^{w})$

Step 1

This derivative could not be completed using the chain rule. Mathway will use another method.

Step 2

Differentiate using the Product Rule which states that $\frac{d}{d w} [f (w) g (w)]$ is $f (w) \frac{d}{d w} [g (w)] + g (w) \frac{d}{d w} [f (w)]$ where $f (w) = w^{\frac{3}{2}}$ and $g (w) = w + c e^{w}$ .

$w^{\frac{3}{2}} \frac{d}{d w} [w + c e^{w}] + (w + c e^{w}) \frac{d}{d w} [w^{\frac{3}{2}}]$

Step 3

Differentiate.

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Step 3.1

By the Sum Rule, the derivative of $w + c e^{w}$ with respect to $w$ is $\frac{d}{d w} [w] + \frac{d}{d w} [c e^{w}]$ .

$w^{\frac{3}{2}} (\frac{d}{d w} [w] + \frac{d}{d w} [c e^{w}]) + (w + c e^{w}) \frac{d}{d w} [w^{\frac{3}{2}}]$

Step 3.2

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

$w^{\frac{3}{2}} (1 + \frac{d}{d w} [c e^{w}]) + (w + c e^{w}) \frac{d}{d w} [w^{\frac{3}{2}}]$

Step 3.3

Since $c$ is constant with respect to $w$ , the derivative of $c e^{w}$ with respect to $w$ is $c \frac{d}{d w} [e^{w}]$ .

$w^{\frac{3}{2}} (1 + c \frac{d}{d w} [e^{w}]) + (w + c e^{w}) \frac{d}{d w} [w^{\frac{3}{2}}]$

Step 4

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

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) \frac{d}{d w} [w^{\frac{3}{2}}]$

Step 5

Differentiate using the Power Rule which states that $\frac{d}{d w} [w^{n}]$ is $n w^{n - 1}$ where $n = \frac{3}{2}$ .

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{3}{2} - 1})$

Step 6

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

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{3}{2} - 1 \cdot \frac{2}{2}})$

Step 7

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

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{3}{2} + \frac{- 1 \cdot 2}{2}})$

Step 8

Combine the numerators over the common denominator.

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{3 - 1 \cdot 2}{2}})$

Step 9

Simplify the numerator.

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Step 9.1

Multiply $- 1$ by $2$ .

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{3 - 2}{2}})$

Step 9.2

Subtract $2$ from $3$ .

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) (\frac{3}{2} w^{\frac{1}{2}})$

Step 10

Combine $\frac{3}{2}$ and $w^{\frac{1}{2}}$ .

$w^{\frac{3}{2}} (1 + c e^{w}) + (w + c e^{w}) \frac{3 w^{\frac{1}{2}}}{2}$

Step 11

Simplify.

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Step 11.1

Apply the distributive property.

$w^{\frac{3}{2}} \cdot 1 + w^{\frac{3}{2}} (c e^{w}) + (w + c e^{w}) \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.2

Apply the distributive property.

$w^{\frac{3}{2}} \cdot 1 + w^{\frac{3}{2}} (c e^{w}) + w \frac{3 w^{\frac{1}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3

Combine terms.

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Step 11.3.1

Multiply $w^{\frac{3}{2}}$ by $1$ .

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + w \frac{3 w^{\frac{1}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.2

Combine $w$ and $\frac{3 w^{\frac{1}{2}}}{2}$ .

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{w (3 w^{\frac{1}{2}})}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.3

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

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 (w^{1} w^{\frac{1}{2}})}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.4

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

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{1 + \frac{1}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.5

Write $1$ as a fraction with a common denominator.

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{\frac{2}{2} + \frac{1}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.6

Combine the numerators over the common denominator.

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{\frac{2 + 1}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.7

Add $2$ and $1$ .

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{\frac{3}{2}}}{2} + c e^{w} \frac{3 w^{\frac{1}{2}}}{2}$

Step 11.3.8

Combine $\frac{3 w^{\frac{1}{2}}}{2}$ and $c$ .

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c}{2} e^{w}$

Step 11.3.9

Combine $\frac{3 w^{\frac{1}{2}} c}{2}$ and $e^{w}$ .

$w^{\frac{3}{2}} + w^{\frac{3}{2}} (c e^{w}) + \frac{3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.3.10

To write $w^{\frac{3}{2}}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$w^{\frac{3}{2}} (c e^{w}) + w^{\frac{3}{2}} \cdot \frac{2}{2} + \frac{3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.3.11

Combine $w^{\frac{3}{2}}$ and $\frac{2}{2}$ .

$w^{\frac{3}{2}} (c e^{w}) + \frac{w^{\frac{3}{2}} \cdot 2}{2} + \frac{3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.3.12

Combine the numerators over the common denominator.

$w^{\frac{3}{2}} (c e^{w}) + \frac{w^{\frac{3}{2}} \cdot 2 + 3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.3.13

Move $2$ to the left of $w^{\frac{3}{2}}$ .

$w^{\frac{3}{2}} (c e^{w}) + \frac{2 \cdot w^{\frac{3}{2}} + 3 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.3.14

Add $2 w^{\frac{3}{2}}$ and $3 w^{\frac{3}{2}}$ .

$w^{\frac{3}{2}} (c e^{w}) + \frac{5 w^{\frac{3}{2}}}{2} + \frac{3 w^{\frac{1}{2}} c e^{w}}{2}$

Step 11.4

Reorder terms.

$e^{w} w^{\frac{3}{2}} c + \frac{3 w^{\frac{1}{2}} c e^{w}}{2} + \frac{5 w^{\frac{3}{2}}}{2}$