Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 4 - Review - Exercises - Page 359: 9

Answer

$\lim\limits_{x \to 0}\frac{e^{2x}-e^{-2x}}{ln(x+1)} = 4$

Work Step by Step

$\lim\limits_{x \to 0}\frac{e^{2x}-e^{-2x}}{ln(x+1)} = \frac{0}{0}$ We can use L'Hospital's Rule: $\lim\limits_{x \to 0}\frac{e^{2x}-e^{-2x}}{ln(x+1)}$ $=\lim\limits_{x \to 0}\frac{2e^{2x}+2e^{-2x}}{1/(x+1)}$ $=\frac{2(1)+2(1)}{1}$ $= 4$
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