Answer
The set of all real numbers except $x=-1$.
Work Step by Step
$\frac{1}{x+1}$
The denominator must be different from 0.
$x+1\ne0$
$x\ne-1$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - Review Exercises - Page 64: 91
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