Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 4 - Section 4.5 - Exponential and Logarithmic Functions - 4.5 Exercises - Page 368: 1

Answer

a. $e^x = 25$ b. $x = \ln 25$ c. $x = 3.219$

Work Step by Step

a-c. are all fill in the blank questions Given $2e^x = 50$ a. To isolate $e^x$, divide both sides by 2 to get $e^x = 25$ b. The next step is to take the natural log of both sides, thus $x = \ln 25$ c. With a calculator, the answer will be $x = 3.219$
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