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 1.4 Library of Functions; Piecewise-defined Functions - 1.4 Assess Your Understanding - Page 85: 5


Piecewise defined functions

Work Step by Step

Piecewise functions are defined by more than one equation and for some of its intervals separately. Let us consider an example: $f(x)=|a|$ can be expressed as a piecewise function: $$ -a,~~a\lt 0 \\ a,~~ a\gt 0 $$
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