Calculus Examples

$y = \sin^{5} (\cos (3 x))$

Step 1

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{5}$ and $g (x) = \sin (\cos (3 x))$ .

Tap for more steps...

Step 1.1

To apply the Chain Rule, set $u_{1}$ as $\sin (\cos (3 x))$ .

$\frac{d}{d u_{1}} [{u_{1}}^{5}] \frac{d}{d x} [\sin (\cos (3 x))]$

Step 1.2

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

$5 {u_{1}}^{4} \frac{d}{d x} [\sin (\cos (3 x))]$

Step 1.3

Replace all occurrences of $u_{1}$ with $\sin (\cos (3 x))$ .

$5 \sin^{4} (\cos (3 x)) \frac{d}{d x} [\sin (\cos (3 x))]$

Step 2

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = \sin (x)$ and $g (x) = \cos (3 x)$ .

Tap for more steps...

Step 2.1

To apply the Chain Rule, set $u_{2}$ as $\cos (3 x)$ .

$5 \sin^{4} (\cos (3 x)) (\frac{d}{d u_{2}} [\sin (u_{2})] \frac{d}{d x} [\cos (3 x)])$

Step 2.2

The derivative of $\sin (u_{2})$ with respect to $u_{2}$ is $\cos (u_{2})$ .

$5 \sin^{4} (\cos (3 x)) (\cos (u_{2}) \frac{d}{d x} [\cos (3 x)])$

Step 2.3

Replace all occurrences of $u_{2}$ with $\cos (3 x)$ .

$5 \sin^{4} (\cos (3 x)) (\cos (\cos (3 x)) \frac{d}{d x} [\cos (3 x)])$

Step 3

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = \cos (x)$ and $g (x) = 3 x$ .

Tap for more steps...

Step 3.1

To apply the Chain Rule, set $u_{3}$ as $3 x$ .

$5 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) (\frac{d}{d u_{3}} [\cos (u_{3})] \frac{d}{d x} [3 x])$

Step 3.2

The derivative of $\cos (u_{3})$ with respect to $u_{3}$ is $- \sin (u_{3})$ .

$5 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) (- \sin (u_{3}) \frac{d}{d x} [3 x])$

Step 3.3

Replace all occurrences of $u_{3}$ with $3 x$ .

$5 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) (- \sin (3 x) \frac{d}{d x} [3 x])$

Step 4

Differentiate.

Tap for more steps...

Step 4.1

Multiply $- 1$ by $5$ .

$- 5 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) (\sin (3 x) \frac{d}{d x} [3 x])$

Step 4.2

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

$- 5 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) \sin (3 x) (3 \frac{d}{d x} [x])$

Step 4.3

Multiply $3$ by $- 5$ .

$- 15 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) \sin (3 x) \frac{d}{d x} [x]$

Step 4.4

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

$- 15 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) \sin (3 x) \cdot 1$

Step 4.5

Multiply $- 15$ by $1$ .

$- 15 \sin^{4} (\cos (3 x)) \cos (\cos (3 x)) \sin (3 x)$