Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 11 - Section 11.1 - Finding Limits Using Tables and Graphs - Exercise Set - Page 1142: 92


This makes sense.

Work Step by Step

Please note that when $\lim_{x \to a^- }f(x) \neq \lim_{x \to a^+ }f(x)$, there must be a jump at $x=a$ in the graph of the function $f(x)$ near $x=a$. Thus, one would have to "lift the pencil" around this point when drawing the graph.
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