Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 2 - Limits - Chapter Review Exercises - Page 94: 21

Answer

The limit does not exist. It approaches $-\infty $ as $ x $ approaches $-1^+$.

Work Step by Step

By substituting, we have $$ \lim _{x \rightarrow -1^+} \frac{1}{x+1}=\frac{1}{-1+1}=\frac{1}{0} . $$ So the limit does not exist. It approaches $\infty $ as $ x $ approaches $-1^+$. Graphing confirms that the one-sided limits are infinite.
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