Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 3 - Section 3.2 - Exponential Functions - Exercise Set - Page 464: 88



Work Step by Step

RECALL: $y=\ln{x} \longrightarrow e^y=x.$ Let $y=\ln{e}.$ Use the rule above to obtain $y=\ln{e} \longrightarrow e^y=e.$ Use the rule "if $a^x=a^y$, then $x=y$" to obtain $y=1.$ Therefore, $\ln{e}= 1.$
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