Answer
(a) $\{1,3\}$
(b) $[1,2)\cup(2,3]$
Work Step by Step
(a) Use the given graph, the solution to $f(x)=0$ can be found as $x=1,3$ or $\{1,3\}$
(b) Use the given graph, the solution to $f(x)\leq0$ can be found as $[1,2)\cup(2,3]$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 3 - Polynomial and Rational Functions - Summary Exercises on Solving Equations and Inequalities - Exercises - Page 382: 4
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