Answer
$L=M$
Work Step by Step
In order for $\displaystyle \lim_{x\rightarrow a}f(x)=1$ to exist,
both the left- and right-sided limits must exist and they MUST BE EQUAL.
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 2 - Limits - 2.2 Definitions of Limits - 2.2 Exercises - Page 65: 5
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