Calculus Examples

$y = \cot (\sin (x))$

Step 1

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

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To apply the Chain Rule, set $u$ as $\sin (x)$ .

$\frac{d}{d u} [\cot (u)] \frac{d}{d x} [\sin (x)]$

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

$- \csc^{2} (u) \frac{d}{d x} [\sin (x)]$

Replace all occurrences of $u$ with $\sin (x)$ .

$- \csc^{2} (\sin (x)) \frac{d}{d x} [\sin (x)]$

Step 2

The derivative of $\sin (x)$ with respect to $x$ is $\cos (x)$ .

$- \csc^{2} (\sin (x)) \cos (x)$