Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 7 - Exponential and Logarithmic Functions - 7-4 Properties of Logarithms - Practice and Problem-Solving Exercises - Page 467: 55

Answer

False

Work Step by Step

We are given the following equation: $\log_4{7}-\log_4{3}=\log_4{4}$ Recall the quotient property of logarithms (pg. 462): $\log_b{\frac{m}{n}}=\log_b{m}-\log_b{n}$ We apply this property to the left side of our equation: $\log_4{7}-\log_4{3}\stackrel{?}{=}\log_4{4}$ $\log_4{\frac{7}{3}}\stackrel{?}{=}\log_4{4}$ Note that $\log_a{m} = \log_a{n} \implies m=n$ Since $\frac{7}{3} \approx 2.33$, then $\frac{7}{3} \ne 4$ and $\log_4{\frac{7}{3} }\ne\log_4{4}$ Thus we see that the statement is false.
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