Answer
The minimum will occur at one of the endpoints of the closed interval.
Work Step by Step
It is basic fact that minimum can only occur either at critical points or at endpoints of an 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 4 - Applications of the Derivative - 4.4 Optimization Problems - 4.4 Exercises - Page 274: 4
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