Answer
domain: $(-\infty,\infty)$.
range: $(-\infty,\infty)$.
Work Step by Step
$f(x)=4-x$
the function has a zero at x=4
//x<4
f(2)=2
//x>4
f(5)=-1
as f(x) exists for all values of x, the domain and the range is $(-\infty,\infty)$.
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter P - P.3 - Functions and Their Graphs - Exercises - Page 27: 33
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