Answer
The solution has one root in the interval.
Work Step by Step
If f(x) = $x^{3}+ x^{2}−2x−1$
then f(−1) = 1 and f(1) = −1.
The Intermediate Value Theorem gives us the result.
Calculus, 10th Edition (Anton)
by Anton, Howard
Published by
Wiley
ISBN 10:
0-47064-772-8
ISBN 13:
978-0-47064-772-1
Chapter 1 - Limits and Continuity - 1.5 Continuity - Exercises Set 1.5 - Page 100: 47
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