Answer
$f(-x)=f(x)$
See plot.
Work Step by Step
We plot $y=x^2$ as an example of an even function. Even functions are symmetrical around the y-axis, so that $f(-x)=f(x)$.
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 1 - Functions - 1.1 Review of Functions - 1.1 Exercises - Page 9: 9
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