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 4 - Exponential and Logarithmic Functions - Section 4.1 Composite Functions - 4.1 Assess Your Understanding - Page 280: 60


$f(x)=|x|$ and $g(x)=2x^2+3$

Work Step by Step

We wish to find two functions $f$ and $g$ such that: $H(x)=(f \circ g)(x) = |2x^2+3|$ Let us consider: $f(x)=|x|$ and $g(x)=2x^2+3$ Then we have the composite function: $H(x)=(f \circ g)(x) =f[g(x)]=f(2x^2+3)=|2x^2+3|$
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