Answer
$u\ne-1,-2$
Work Step by Step
we need to check when $1+\frac{1}{u+1}=0$ and when $u+1=0$
so
$\frac{1}{u+1}=-1$
$1=-u-1$
$u=-2$
and
$u=-1$
So the domain of the function is $u\ne-1,-2$
Calculus 8th Edition
by Stewart, James
Published by
Cengage
ISBN 10:
1285740629
ISBN 13:
978-1-28574-062-1
Chapter 1 - Functions and Limits - 1.1 Four Ways to Represent a Function - 1.1 Exercises - Page 21: 36
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