#### 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).

Published by
W. H. Freeman

ISBN 10:
1464125260

ISBN 13:
978-1-46412-526-3

Rational

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