University Calculus: Early Transcendentals (3rd Edition)

Published by Pearson
ISBN 10: 0321999584
ISBN 13: 978-0-32199-958-0

Chapter 3 - Section 3.6 - The Chain Rule - Exercises - Page 158: 31

Answer

$$y'=(3x-2)^5-x^{-3}\Big(4-\frac{1}{2x^2}\Big)^{-2}$$

Work Step by Step

$$y=\frac{1}{18}(3x-2)^6+\Big(4-\frac{1}{2x^2}\Big)^{-1}$$ The derivative of function $y$ is: $$y'=\frac{1}{18}\Big[(3x-2)^6\Big]'+\Bigg[\Big(4-\frac{1}{2x^2}\Big)^{-1}\Bigg]'$$ $$y'=\frac{1}{18}\Big[6(3x-2)^5(3x-2)'\Big]+\Bigg[-\Big(4-\frac{1}{2x^2}\Big)^{-2}\Big(4-\frac{1}{2x^2}\Big)'\Bigg]$$ $$y'=\frac{1}{18}\Big[6(3x-2)^5\times3\Big]+\Bigg[-\Big(4-\frac{1}{2x^2}\Big)^{-2}\Big(0-\Big(\frac{-1(2x^2)'}{4x^4}\Big)\Big)\Bigg]$$ $$y'=\frac{1}{18}\Big[18(3x-2)^5\Big]+\Bigg[-\Big(4-\frac{1}{2x^2}\Big)^{-2}\Big(\frac{4x}{4x^4}\Big)\Bigg]$$ $$y'=(3x-2)^5-\Big(4-\frac{1}{2x^2}\Big)^{-2}\frac{1}{x^3}$$ $$y'=(3x-2)^5-x^{-3}\Big(4-\frac{1}{2x^2}\Big)^{-2}$$
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.