   Chapter 8.5, Problem 20E ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919

#### Solutions

Chapter
Section ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919
Textbook Problem
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# Integrating a Trigonometric Function In Exercises 1–32, find the indefinite integral. See Examples 1, 2, 3, 4, 5, and 8. ∫ tan   7 x   d x

To determine

To calculate: The integral of tan7xdx.

Explanation

Given Information:

The provided integral is tan7xdx.

Formula used:

Write the formula of integral of tanu.

tanudu=ln|cosu|+C

Write the formula for derivative of un.

ddxun=nun1

Calculation:

Consider u=7x.

Differentiate the above considered function.

du=7dx

The provided integral is,

tan7xdx

Multiply and divide by 7.

tan7xdx=17(tan7x)7dx

Substitute u for 7x and du for 7dx

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