Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 2: Limits and Continuity - Section 2.4 - One-Sided Limits - Exercises 2.4 - Page 74: 11

Answer

$$\begin{aligned}\lim _{x \rightarrow-0.5^{-}} \sqrt{\frac{x+2}{x+1}}=\sqrt{3} \end{aligned}$$

Work Step by Step

Given $$\lim _{x \rightarrow-0.5^{-}} \sqrt{\frac{x+2}{x+1}}$$ The limit from the left is equal to the limit at the point, which can be calculated by substituting the value for $ x .$ So, we get $$\begin{aligned}L&=\lim _{x \rightarrow-0.5^{-}} \sqrt{\frac{x+2}{x+1}}\\ &=\sqrt{\frac{-0.5+2}{-0.5+1}}\\ &=\sqrt{\frac{1.5}{0.5}}\\ &=\sqrt{\frac{3}{1}}\\ &=\sqrt{3} \end{aligned}$$
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