Answer
$-1$
Work Step by Step
$\lim _{x\rightarrow 3 ^{-}}\dfrac {x-3}{\left| x-3\right| }=\dfrac {-\left| x-3\right| }{\left| x-3\right| }=-1$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 13 - Section 13.1 - Finding Limits Numerically and Graphically - 13.1 Exercises - Page 905: 15
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