Answer
Even
Work Step by Step
$f(-x)=1+3(-x)^{2}-(-x)^{4}=1+3x^{2}-x^{4}=f(x)$
$\therefore f(x)$ is even.
Calculus: Early Transcendentals 9th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1337613924
ISBN 13:
978-1-33761-392-7
Chapter 1 - Section 1.1 - Four Ways to Represent a Function - 1.1 Exercises - Page 21: 85
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