Answer
$(-\infty,-1),(-1,1),(1,\infty)$
Work Step by Step
Whenever the slope of the function changes from positive to negative or vice-versa then it ceases to be one-to-one on that interval.
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 1 - Functions - 1.3 Inverse, Exponential, and Logarithmic Functions - 1.3 Exercises - Page 35: 11
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