Answer
$-.7x^{-1.7}$
Work Step by Step
$\frac{d}{dx}\big(x^{-.7}\big)=-.7 \cdot x^{-.7-1}=-.7x^{-1.7}$
Calculus Concepts: An Informal Approach to the Mathematics of Change 5th Edition
by LaTorre, Donald R.; Kenelly, John W.; Reed, Iris B.; Carpenter, Laurel R.; Harris, Cynthia R.
Published by
Brooks Cole
ISBN 10:
1-43904-957-2
ISBN 13:
978-1-43904-957-0
Chapter 3 - Determining Change: Derivatives - 3.1 Activities - Page 198: 7
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