Precalculus (6th Edition) Blitzer

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

Chapter 1 - Section 1.8 - Inverse Functions - Exercise Set - Page 272: 96

Answer

Shown below.

Work Step by Step

Let us consider the function below: $f\left( x \right)=\frac{3x-2}{5x-3}$ Now, to find the inverse of the above function Put $y=f\left( x \right)$ So $y=\frac{3x-2}{5x-3}$ So, interchange y with x $x=\frac{3y-2}{5y-3}$ Now solve for the value of y: $\begin{align} & 5xy-3x=3y-2 \\ & 5xy-3y=3x-2 \\ & y\left( 5x-3 \right)=3x-2 \\ & y=\frac{3x-2}{5x-3} \end{align}$ Therefore, ${{f}^{-1}}\left( x \right)=\frac{3x-2}{5x-3}$ $\text{Since }f\left( x \right)={{f}^{-1}}\left( x \right)=\frac{3x-2}{5x-3}$. Therefore the function is its own inverse.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.