Precalculus (6th Edition) Blitzer

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

Chapter 3 - Section 3.3 - Properties of Logarithms - Exercise Set - Page 475: 60

Answer

$\displaystyle \ln\frac{(x+9)^{8}}{x^{4}}$

Work Step by Step

$ 8\ln(x+9)-4\ln x=\quad $...apply the Power Rule: $\quad \log_{b}(M^{p})=p\cdot\log_{b}\mathrm{M}$ $=\ln(x+9)^{8}-\ln x^{4}\quad $...apply the Quotient Rule: $\displaystyle \quad \log_{b}(\frac{M}{N})=\log_{b}\mathrm{M}-\log_{b}\mathrm{N}$ $=\displaystyle \ln\frac{(x+9)^{8}}{x^{4}}$
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