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 2.3 - The Precise Definition of a Limit - Exercises 2.3 - Page 66: 24

Answer

( - 1.111, -0.909) and 𝛿 = 0.091

Work Step by Step

Solve the inequality |f(x) -L| < e |$\frac{1}{x}$ + 1| <0.1 -0.1 x > $-0.9^{-1}$ or - 1.1110; Now we need to find the value of 𝛿>0 that places the open interval (-1-𝛿, -1+𝛿) centered at -1 inside the interval ( -1.111, -0.909). distance between -1 and -1.111, is 0.111 and distance between-1 and -0.909 is 0.091. so we will take the smaller value for 𝛿, so 𝛿 = 0.091
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