Answer
(a)$f(1)=2$, $f(-1)=0$, $-f(1)=-2$
(b) $x=-1$
Work Step by Step
(a) At $x=1$, $f(x)=2$. So, $f(1)=2$.
At $x=-1$, $f(x)=0$. So, $f(-1)=0$.
Since $f(1)=2$, $-f(1)=-2$.
(b) $f(-1)=0$. Therefore, the solution must be $x=-1$.
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 2 - Functions - Review Exercises and Problems for Chapter Two - Page 109: 11
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