Answer
(a) $ x\in(-\infty,1]$
(b) $ y\in [-2,\infty)$
Work Step by Step
Function: $ y=-2+\sqrt {1-x}$
(a) Domain: $1-x\geq0$, $ x\leq1$, $ x\in(-\infty,1]$
(b) Range: $ y\geq -2$, $ y\in [-2,\infty)$
Thomas' Calculus 13th Edition
by Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0-32187-896-5
ISBN 13:
978-0-32187-896-0
Chapter 1: Functions - Practice Exercises - Page 37: 20
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