Precalculus (6th Edition) Blitzer

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

Chapter 3 - Test - Page 515: 12



Work Step by Step

We need to take $\ln $ to each side of the equation: $\ln 5^x =\ln 1.4$ Simplify it by applying rule $\log{a^n}=n \log x $ to obtain: $ x \ln 5= \ln 1.4$ This implies that $ x = \dfrac{\ln 1.4}{\ln 5} \approx 0.2091$
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