Calculus: Early Transcendentals 9th Edition

Published by Cengage Learning
ISBN 10: 1337613924
ISBN 13: 978-1-33761-392-7

Chapter 3 - Review - Exercises - Page 270: 4

Answer

$y'=\dfrac{\sec^{2}x+\cos x\sec^{2}x+\tan x\sin x}{(1+\cos x)^{2}}$

Work Step by Step

$y=\dfrac{\tan x}{1+\cos x}$ Start the differentiation process by using the quotient rule: $y'=\dfrac{(1+\cos x)(\tan x)'-(\tan x)(1+\cos x)'}{(1+\cos x)^{2}}=...$ Evaluate the derivatives indicated in the numerator: $...=\dfrac{(1+\cos x)(\sec^{2}x)-(\tan x)(-\sin x)}{(1+\cos x)^{2}}=...$ $...=\dfrac{\sec^{2}x+\cos x\sec^{2}x+\tan x\sin x}{(1+\cos x)^{2}}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.