Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 5 - 5.2 - Logarithmic Functions and Their Graphs - 5.2 Exercises - Page 379: 55



Work Step by Step

$e^{-4x}=\frac{1}{2}$ $\ln e^{-4x}=\ln\frac{1}{2}$ (using the Inverse Property, page 375): $-4x=\ln\frac{1}{2}$
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