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 466: 137


This makes sense.

Work Step by Step

From the fact that $\log_aa=1$ and some logarithm properties such as$$\log_ab^c=c\log_ab, \quad \log_abc= \log_ab + \log_ac,$$we can evaluate many common logarithms without using a calculator.
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