Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 12 - Exponential Functions and Logarithmic Functions - Test: Chapter 12 - Page 845: 14

Answer

$\log\dfrac{a^3b^{1/2}}{c^2}=3\log a+\dfrac{1}{2}\log b-2\log c$

Work Step by Step

Using the properties of logarithms, the given expression, $ \log\dfrac{a^3b^{1/2}}{c^2},$ is equivalent to \begin{align*} & \log (a^3b^{1/2})-\log c^2 &(\log\dfrac{x}{y}=\log x-\log y) \\\\&= \log a^3+\log b^{1/2}-\log c^2 &(\log (xy)=\log x+\log y) \\&= 3\log a+\dfrac{1}{2}\log b-2\log c &(\log x^y=y\log x) .\end{align*} Hence, $ \log\dfrac{a^3b^{1/2}}{c^2}$ is equivalent to $3\log a+\dfrac{1}{2}\log b-2\log c $.
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