Calculus: Early Transcendentals (2nd Edition)

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: 3


generic answer: $y=c$ one specific answer: $y=2$

Work Step by Step

Since there's a point where $f'(x)=0$ and there can't be a min or max at the point, it must be a line with slope of zero. $y=c$, with c being a constant, meets these requirements. Any real number, for example 2, can be c.
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