
To explain : why

Answer to Problem 123E
The vertical lines are undefined; a log with base
Explanation of Solution
Given information : The question is
The problem is saying that for some reason
The problem looks like in exponential form
If
A horizontal line is not a problem and the correct horizontal line are no undefined. Because we got horizontal line for the exponential version
To get a vertical line for a logarithm. The log function is the inverse of the exponential function, which means its reflected about
So, because vertical lines are undefined; a log with base
Chapter 3 Solutions
Precalculus with Limits: A Graphing Approach
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