Calculus (3rd Edition)

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



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).
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