Finite Math and Applied Calculus (6th Edition)

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

Chapter 11 - Section 11.6 - Implicit Differentiation - Exercises - Page 853: 43

Answer

$\dfrac{dy}{dx}=\dfrac{2x+1}{4x-2} (\dfrac{2}{2x+1}-\dfrac{4}{4x-2})$

Work Step by Step

We have: $y=\dfrac{2x+1}{4x-2}$ We differentiate both sides with respect to $x$. $\ln y=\ln (2x+1) -\ln (4x-2) \\ \dfrac{1}{y} \dfrac{dy}{dx}=\dfrac{2}{2x+1}-\dfrac{4}{4x-2}\\ \dfrac{dy}{dx}=y (\dfrac{2}{2x+1}-\dfrac{4}{4x-2})\\ \dfrac{dy}{dx}=\dfrac{2x+1}{4x-2} (\dfrac{2}{2x+1}-\dfrac{4}{4x-2})$
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