Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 3 - The Derivative - 3.1 Limits - 3.1 Exercises - Page 136: 13


please see "step by step" for explanation

Work Step by Step

A limit at x=a exists if 1. both one sided limits exist AND 2. they are equal ------------ In exercise 6, both the limit from the left and the limit from the right exist, and they both equal 4. Therefore $\displaystyle \lim_{x\rightarrow 2}F(x)$ exists and equals 4. In exercise 9, the left sided limit exists and equals $-1,$ the right sided limit exists and equals $-\displaystyle \frac{1}{2}$, BUT, they are not equal, so $\displaystyle \lim_{x\rightarrow-2}f(x)$ does not exist .
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.