Calculus Examples

$y = {\sin (x)}^{\tan (x)}$

Step 1

Use the properties of logarithms to simplify the differentiation.

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Step 1.1

Rewrite ${\sin (x)}^{\tan (x)}$ as $e^{\ln ({\sin (x)}^{\tan (x)})}$ .

$\frac{d}{d x} [e^{\ln ({\sin (x)}^{\tan (x)})}]$

Step 1.2

Expand $\ln ({\sin (x)}^{\tan (x)})$ by moving $\tan (x)$ outside the logarithm.

$\frac{d}{d x} [e^{\tan (x) \ln (\sin (x))}]$

Step 2

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

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Step 2.1

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

$\frac{d}{d u_{1}} [e^{u_{1}}] \frac{d}{d x} [\tan (x) \ln (\sin (x))]$

Step 2.2

Differentiate using the Exponential Rule which states that $\frac{d}{d u_{1}} [a^{u_{1}}]$ is $a^{u_{1}} \ln (a)$ where $a$ = $e$ .

$e^{u_{1}} \frac{d}{d x} [\tan (x) \ln (\sin (x))]$

Step 2.3

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

$e^{\tan (x) \ln (\sin (x))} \frac{d}{d x} [\tan (x) \ln (\sin (x))]$

Step 3

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 $f (x) = \tan (x)$ and $g (x) = \ln (\sin (x))$ .

$e^{\tan (x) \ln (\sin (x))} (\tan (x) \frac{d}{d x} [\ln (\sin (x))] + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 4

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

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Step 4.1

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

$e^{\tan (x) \ln (\sin (x))} (\tan (x) (\frac{d}{d u_{2}} [\ln (u_{2})] \frac{d}{d x} [\sin (x)]) + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 4.2

The derivative of $\ln (u_{2})$ with respect to $u_{2}$ is $\frac{1}{u_{2}}$ .

$e^{\tan (x) \ln (\sin (x))} (\tan (x) (\frac{1}{u_{2}} \frac{d}{d x} [\sin (x)]) + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 4.3

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

$e^{\tan (x) \ln (\sin (x))} (\tan (x) (\frac{1}{\sin (x)} \frac{d}{d x} [\sin (x)]) + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 5

Convert from $\frac{1}{\sin (x)}$ to $\csc (x)$ .

$e^{\tan (x) \ln (\sin (x))} (\tan (x) (\csc (x) \frac{d}{d x} [\sin (x)]) + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 6

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

$e^{\tan (x) \ln (\sin (x))} (\tan (x) \csc (x) \cos (x) + \ln (\sin (x)) \frac{d}{d x} [\tan (x)])$

Step 7

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

$e^{\tan (x) \ln (\sin (x))} (\tan (x) \csc (x) \cos (x) + \ln (\sin (x)) \sec^{2} (x))$

Step 8

Simplify.

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Step 8.1

Apply the distributive property.

$e^{\tan (x) \ln (\sin (x))} (\tan (x) \csc (x) \cos (x)) + e^{\tan (x) \ln (\sin (x))} (\ln (\sin (x)) \sec^{2} (x))$

Step 8.2

Remove parentheses.

$e^{\tan (x) \ln (\sin (x))} \tan (x) \csc (x) \cos (x) + e^{\tan (x) \ln (\sin (x))} \ln (\sin (x)) \sec^{2} (x)$

Step 8.3

Reorder terms.

$e^{\tan (x) \ln (\sin (x))} \cos (x) \csc (x) \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4

Simplify each term.

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Step 8.4.1

Rewrite $\tan (x)$ in terms of sines and cosines.

$e^{\frac{\sin (x)}{\cos (x)} \ln (\sin (x))} \cos (x) \csc (x) \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.2

Combine $\frac{\sin (x)}{\cos (x)}$ and $\ln (\sin (x))$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x) \csc (x) \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.3

Rewrite $\csc (x)$ in terms of sines and cosines.

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x) \frac{1}{\sin (x)} \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.4

Multiply $e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x) \frac{1}{\sin (x)}$ .

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Step 8.4.4.1

Combine $\frac{1}{\sin (x)}$ and $e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}$ .

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}}{\sin (x)} \cos (x) \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.4.2

Combine $\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}}{\sin (x)}$ and $\cos (x)$ .

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x)}{\sin (x)} \tan (x) + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.5

Rewrite $\tan (x)$ in terms of sines and cosines.

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x)}{\sin (x)} \cdot \frac{\sin (x)}{\cos (x)} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.6

Combine.

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x) \sin (x)}{\sin (x) \cos (x)} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.7

Cancel the common factor of $\cos (x)$ .

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Step 8.4.7.1

Cancel the common factor.

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \cos (x) \sin (x)}{\sin (x) \cos (x)} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.7.2

Rewrite the expression.

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \sin (x)}{\sin (x)} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.8

Cancel the common factor of $\sin (x)$ .

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Step 8.4.8.1

Cancel the common factor.

$\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \sin (x)}{\sin (x)} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.8.2

Divide $e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}$ by $1$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\tan (x) \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.9

Rewrite $\tan (x)$ in terms of sines and cosines.

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\frac{\sin (x)}{\cos (x)} \ln (\sin (x))} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.10

Combine $\frac{\sin (x)}{\cos (x)}$ and $\ln (\sin (x))$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \sec^{2} (x) \ln (\sin (x))$

Step 8.4.11

Rewrite $\sec (x)$ in terms of sines and cosines.

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} {(\frac{1}{\cos (x)})}^{2} \ln (\sin (x))$

Step 8.4.12

Apply the product rule to $\frac{1}{\cos (x)}$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \frac{1^{2}}{\cos^{2} (x)} \ln (\sin (x))$

Step 8.4.13

One to any power is one.

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \frac{1}{\cos^{2} (x)} \ln (\sin (x))$

Step 8.4.14

Combine $e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}$ and $\frac{1}{\cos^{2} (x)}$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + \frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}}{\cos^{2} (x)} \ln (\sin (x))$

Step 8.4.15

Combine $\frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}}}{\cos^{2} (x)}$ and $\ln (\sin (x))$ .

$e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} + \frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5

Simplify each term.

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Step 8.5.1

Separate fractions.

$e^{\frac{\ln (\sin (x))}{1} \cdot \frac{\sin (x)}{\cos (x)}} + \frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5.2

Convert from $\frac{\sin (x)}{\cos (x)}$ to $\tan (x)$ .

$e^{\frac{\ln (\sin (x))}{1} \tan (x)} + \frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5.3

Divide $\ln (\sin (x))$ by $1$ .

$e^{\ln (\sin (x)) \tan (x)} + \frac{e^{\frac{\sin (x) \ln (\sin (x))}{\cos (x)}} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5.4

Simplify the numerator.

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Step 8.5.4.1

Separate fractions.

$e^{\ln (\sin (x)) \tan (x)} + \frac{e^{\frac{\ln (\sin (x))}{1} \cdot \frac{\sin (x)}{\cos (x)}} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5.4.2

Convert from $\frac{\sin (x)}{\cos (x)}$ to $\tan (x)$ .

$e^{\ln (\sin (x)) \tan (x)} + \frac{e^{\frac{\ln (\sin (x))}{1} \tan (x)} \ln (\sin (x))}{\cos^{2} (x)}$

Step 8.5.4.3

Divide $\ln (\sin (x))$ by $1$ .

$e^{\ln (\sin (x)) \tan (x)} + \frac{e^{\ln (\sin (x)) \tan (x)} \ln (\sin (x))}{\cos^{2} (x)}$