Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 12 - Exponential Functions and Logarithmic Functions - 12.1 Composite Functions and Inverse Functions - 12.1 Exercise Set - Page 788: 63

Answer

See image

Work Step by Step

The graphs of $f$ and $f^{-1}$ (if the inverse is defined) are symmetrical about the line $y=x.$ Symmetry: Reflection of the point (a,b) about the line $y=x$ is the point (b,a). The graph of $f(x)=x^{3}+1$ passes the horizontal line test, (as in example 8, the graph of $y=x^{3}$ is raised up by 1 unit) so $f^{-1}(x)$ exists. Graph $f$ by creating a table of function values: $\left[\begin{array}{lllllll} x & -2 & -1 & 0 & 1 & 2 & \\ y=f(x) & -7 & 0 & 1 & 2 & 9 & \end{array}\right]$ Join the points with a smooth curve (blue graph). To graph $f^{-1}(x) $we plot the points $(y,x)$ from the above table. Join the points with a smooth curve (red graph)
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.