Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 11 - Section 11.4 - The Chain Rule - Exercises - Page 831: 30

Answer

$h^{\prime}(x)=-[(2x-1)(x-1)]^{-4/3}\cdot(4x-3)$

Work Step by Step

h(x) is a composite function multiplied with a constant, $3$. $u(v(x))=[(2x-1)(x-1)]^{-1/3}$ The last calculation in this composition would be a power to ($-1/3$), so $u(x)=x^{-1/3},\displaystyle \qquad \frac{du}{dx}=-\frac{1}{3}x^{-4/3}$ $v(x)=(2x-1)(x-1)$ , which is a product, ... $(fg)^{\prime}=f^{\prime}g+fg^{\prime}$ $\displaystyle \frac{dv}{dx}=(2)(x-1)+(2x-1)(1)$ $=2x-2+2x-1$ $=4x-3$ Now, $h(x)=3u(v(x)), $ $h^{\prime}(x)=3\displaystyle \frac{du}{dv}\frac{dv}{dx}=$ $=3(-\displaystyle \frac{1}{3}v^{-4/3})\cdot(4x-3)$ $h^{\prime}(x)=-[(2x-1)(x-1)]^{-4/3}\cdot(4x-3)$
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.