College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 6 - Section 6.5 - Properties of Logarithms - 6.5 Assess Your Understanding: 29

Answer

$a+b$

Work Step by Step

$\bf{\text{Solution Outline:}}$ To write the given expression, $ \ln6 ,$ in terms of $a$ and $b,$ where $a=\ln2$ and $b=\ln3,$ use the laws of logarithms and substitution. $\bf{\text{Solution Details:}}$ The given expression is equivalent to \begin{array}{l}\require{cancel} \ln(2\cdot3) .\end{array} Using the Product Rule of Logarithms, which is given by $\log_b (xy)=\log_bx+\log_by,$ the expression above is equivalent \begin{array}{l}\require{cancel} \ln2+\ln3 .\end{array} By substitution, since $a=\ln2$ and $b=\ln3,$ the expression above is equivalent to \begin{array}{l}\require{cancel} a+b .\end{array}
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