Calculus Examples

$x^{5} e^{- 3 \ln (x)}$

Step 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 $f (x) = x^{5}$ and $g (x) = e^{- 3 \ln (x)}$ .

$x^{5} \frac{d}{d x} [e^{- 3 \ln (x)}] + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

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 $g (x) = - 3 \ln (x)$ .

Tap for more steps...

Step 2.1

To apply the Chain Rule, set $u$ as $- 3 \ln (x)$ .

$x^{5} (\frac{d}{d u} [e^{u}] \frac{d}{d x} [- 3 \ln (x)]) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 2.2

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

$x^{5} (e^{u} \frac{d}{d x} [- 3 \ln (x)]) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 2.3

Replace all occurrences of $u$ with $- 3 \ln (x)$ .

$x^{5} (e^{- 3 \ln (x)} \frac{d}{d x} [- 3 \ln (x)]) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 3

Since $- 3$ is constant with respect to $x$ , the derivative of $- 3 \ln (x)$ with respect to $x$ is $- 3 \frac{d}{d x} [\ln (x)]$ .

$x^{5} (e^{- 3 \ln (x)} (- 3 \frac{d}{d x} [\ln (x)])) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 4

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

$x^{5} (e^{- 3 \ln (x)} (- 3 \frac{1}{x})) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5

Differentiate using the Power Rule.

Tap for more steps...

Step 5.1

Combine $- 3$ and $\frac{1}{x}$ .

$x^{5} (e^{- 3 \ln (x)} \frac{- 3}{x}) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2

Simplify terms.

Tap for more steps...

Step 5.2.1

Move the negative in front of the fraction.

$x^{5} (e^{- 3 \ln (x)} (- \frac{3}{x})) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.2

Combine $e^{- 3 \ln (x)}$ and $\frac{3}{x}$ .

$x^{5} (- \frac{e^{- 3 \ln (x)} \cdot 3}{x}) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.3

Move $3$ to the left of $e^{- 3 \ln (x)}$ .

$x^{5} (- \frac{3 \cdot e^{- 3 \ln (x)}}{x}) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.4

Combine $x^{5}$ and $\frac{3 e^{- 3 \ln (x)}}{x}$ .

$- \frac{x^{5} (3 e^{- 3 \ln (x)})}{x} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5

Cancel the common factor of $x^{5}$ and $x$ .

Tap for more steps...

Step 5.2.5.1

Factor $x$ out of $x^{5} (3 e^{- 3 \ln (x)})$ .

$- \frac{x (x^{4} (3 e^{- 3 \ln (x)}))}{x} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5.2

Cancel the common factors.

Tap for more steps...

Step 5.2.5.2.1

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

$- \frac{x (x^{4} (3 e^{- 3 \ln (x)}))}{x^{1}} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5.2.2

Factor $x$ out of $x^{1}$ .

$- \frac{x (x^{4} (3 e^{- 3 \ln (x)}))}{x \cdot 1} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5.2.3

Cancel the common factor.

$- \frac{x (x^{4} (3 e^{- 3 \ln (x)}))}{x \cdot 1} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5.2.4

Rewrite the expression.

$- \frac{x^{4} (3 e^{- 3 \ln (x)})}{1} + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.5.2.5

Divide $x^{4} (3 e^{- 3 \ln (x)})$ by $1$ .

$- (x^{4} (3 e^{- 3 \ln (x)})) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.2.6

Multiply $3$ by $- 1$ .

$- 3 (x^{4} (e^{- 3 \ln (x)})) + e^{- 3 \ln (x)} \frac{d}{d x} [x^{5}]$

Step 5.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 5$ .

$- 3 x^{4} e^{- 3 \ln (x)} + e^{- 3 \ln (x)} (5 x^{4})$

Step 6

Add $- 3 x^{4} e^{- 3 \ln (x)}$ and $e^{- 3 \ln (x)} (5 x^{4})$ .

Tap for more steps...

Step 6.1

Move $e^{- 3 \ln (x)}$ .

$- 3 x^{4} e^{- 3 \ln (x)} + 5 x^{4} e^{- 3 \ln (x)}$

Step 6.2

Add $- 3 x^{4} e^{- 3 \ln (x)}$ and $5 x^{4} e^{- 3 \ln (x)}$ .

$2 x^{4} e^{- 3 \ln (x)}$