Calculus Examples

$f (x) = \frac{e^{x}}{\tan (x)}$

Step 1

Differentiate using the Quotient Rule which states that $\frac{d}{d x} [\frac{f (x)}{g (x)}]$ is $\frac{g (x) \frac{d}{d x} [f (x)] - f (x) \frac{d}{d x} [g (x)]}{{g (x)}^{2}}$ where $f (x) = e^{x}$ and $g (x) = \tan (x)$ .

$\frac{\tan (x) \frac{d}{d x} [e^{x}] - e^{x} \frac{d}{d x} [\tan (x)]}{\tan^{2} (x)}$

Step 2

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

$\frac{\tan (x) e^{x} - e^{x} \frac{d}{d x} [\tan (x)]}{\tan^{2} (x)}$

Step 3

The derivative of $\tan (x)$ with respect to $x$ is $\sec^{2} (x)$ .

$\frac{\tan (x) e^{x} - e^{x} \sec^{2} (x)}{\tan^{2} (x)}$

Step 4

Simplify.

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Step 4.1

Reorder factors in $\tan (x) e^{x} - e^{x} \sec^{2} (x)$ .

$\frac{e^{x} \tan (x) - e^{x} \sec^{2} (x)}{\tan^{2} (x)}$

Step 4.2

Factor $e^{x}$ out of $e^{x} \tan (x) - e^{x} \sec^{2} (x)$ .

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Step 4.2.1

Factor $e^{x}$ out of $e^{x} \tan (x)$ .

$\frac{e^{x} (\tan (x)) - e^{x} \sec^{2} (x)}{\tan^{2} (x)}$

Step 4.2.2

Factor $e^{x}$ out of $- e^{x} \sec^{2} (x)$ .

$\frac{e^{x} (\tan (x)) + e^{x} (- \sec^{2} (x))}{\tan^{2} (x)}$

Step 4.2.3

Factor $e^{x}$ out of $e^{x} (\tan (x)) + e^{x} (- \sec^{2} (x))$ .

$\frac{e^{x} (\tan (x) - \sec^{2} (x))}{\tan^{2} (x)}$