College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 4 - Section 4.1 - Inverse Functions - 4.1 Exercises - Page 394: 13



Work Step by Step

Test to show that $f(a)=f(b)$ implies $a=b$. $2a^3-1=2b^3-1$ Add 1 to each side. $2a^3=2b^3$ Divide each side by 2. $a^3=b^3$ Take cube root of each side. $a=b$; Yes
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