Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 8 - Integration Techniques, L'Hopital's Rule, and Improper Integrals - 8.7 Exercises - Page 565: 80

Answer

$${\text{Limit is not in the form }}\frac{0}{0}{\text{ or }}\frac{\infty }{\infty }$$

Work Step by Step

$$\eqalign{ & \mathop {\lim }\limits_{x \to 0} \frac{{{e^{2x}} - 1}}{{{e^x}}} \cr & = \mathop {\lim }\limits_{x \to 0} \frac{{2{e^{2x}}}}{{{e^x}}}{\text{ }}\left( {{\text{Step 1}}} \right) \cr & = \mathop {\lim }\limits_{x \to 0} 2{e^x}{\text{ }}\left( {{\text{Step 2}}} \right) \cr & = 2{\text{ }}\left( {{\text{Step 3}}} \right) \cr & {\text{From the first step it is not necessary to use l'hopital's rule}} \cr & \mathop {\lim }\limits_{x \to 0} \frac{{{e^{2x}} - 1}}{{{e^x}}} = \frac{{{e^{2\left( 0 \right)}} - 1}}{{{e^0}}} = \frac{{1 - 1}}{1} = 0 \cr & {\text{The result is not in the form }}\frac{0}{0},\frac{\infty }{\infty },{\text{ so the rule}} \cr & {\text{does not apply. }} \cr} $$
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