Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 2 - Section 2.7 - Combining Functions - 2.7 Exercises - Page 217: 41

Answer

$3$

Work Step by Step

Based on the table, the $y-$value of $f$ at $x=1$ is $2$. Hence, $f(1)=2.$ The $y-$value of $f$ when $x=2$ is $3$. Hence, $f(2)=3$. The given composition function, $ f(f(1)) ,$ evaluates to \begin{array}{l}\require{cancel} f(2) \\\\= 3 .\end{array}
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