Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 1 - Functions and Their Graphs - Section 1.1 Functions - 1.1 Assess Your Understanding - Page 54: 54


$\{x| x\ne0,\pm2\}$

Work Step by Step

The domain requirement(s) of the function is $x^3-4x=x(x^2-4)=x(x+2)(x-2)\ne0$ Thus, the domain is $\{x| x\ne0,\pm2\}$
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