Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 5 - Exponential and Logarithmic Functions - 5.5 Properties of Logarithms - 5.5 Assess Your Understanding: 15

Answer

$-4$

Work Step by Step

Recall: $\log _{a}a^{n}=n\left( a\neq 1\right)$ Thus, $\ln e^{-4}=\log _{e}e^{-4}=-4$
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