Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 13 - A Preview of Calculus: The Limit, Derivative, and Integral of a Function - Chapter Review - Review Exercises - Page 926: 21

Answer

$4$

Work Step by Step

We see that as we move from the left toward the $x$ value of $-4$, the $y$ value tends toward $4$ as well. Therefore, $\lim\limits_{x \to 4^{-}} f(x)=4$
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