Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 3 - Derivatives - 3.4 The Product and Quotient Rules - 3.4 Exercises - Page 160: 13

Answer

$e^w(w^3+3w^2-1)$

Work Step by Step

We are trying to find $\frac{d}{dw}g(w)=e^w(w^3-1)$. Use the Product Rule, $\frac{d}{dw}u(w)v(w)=u'(w)v(w)+u(w)v'(w)$. In this case, $u(w)=e^w$, so $u'(w)=e^w$. Also, $v(w)=w^3-1$, so $v'(w)=3w^2$. Plugging these in, we get: $\frac{d}{dw}e^w(w^3-1)$ $=e^w(w^3-1)+e^w(3w^2)$ $=e^w(w^3+3w^2-1)$
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