Answer
Rational
Work Step by Step
We see that $ f(x)=x^{-4}$ can be rewritten in the form $$ f(x)=\frac{1}{x^4}$$
which it is a rational function (a ratio of two polynomial functions).
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 1 - Precalculus Review - 1.3 The Basic Classes of Functions - Exercises - Page 22: 14
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