Answer
See the graph.
Work Step by Step
Since derivative ia vanishing at $x=-1$ and $x=3$ and function passes through origin, therefore one of them will be local maxima and other will be local minima.
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 4 - Applications of the Derivative - 4.2 What Derivatives Tell Us - 4.2 Exercises - Page 256: 15
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