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0 1 ,0 , forms Evaluate the following limits. Check your

Calculus: Early Transcendentals | 1st Edition | ISBN: 9780321570567 | Authors: William L. Briggs, Lyle Cochran, Bernard Gillett ISBN: 9780321570567 2

Solution for problem 40RE Chapter 4

Calculus: Early Transcendentals | 1st Edition

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Calculus: Early Transcendentals | 1st Edition | ISBN: 9780321570567 | Authors: William L. Briggs, Lyle Cochran, Bernard Gillett

Calculus: Early Transcendentals | 1st Edition

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Problem 40RE

? 0 1 ,0 ,? forms ?Evaluate the following limits. Check your results by graphing. limx 1/x x??

Step-by-Step Solution:

Solution Step 1 1/x In this problem we have to evaluate limx By direct substitution of limit, we get lim x 1/x= 1/ = 0 x 1/x 0 Thus lx has the indeterminate form . To evaluate this limit we will be using the following two steps: g(x) 0, Assume limf(x) has the indeterminate form 0 1 , . 0 xa 0 1. Evaluate L = lixax)ln f(x).This limit can often be put in the form 0or both of which can be handled by l’hopital’s rule. g(x) 2. Then limf(x) = eL xa l'Hôpital's Rule: f(x) 0 f(x) ± Suppose that we have one of the following cases, lim xa g(x)= 0r lixa g(x) ± Where a can be any real number, infinity or negative infinity. f(x) f(x) In these cases we have lim g(x)= lim gx) xa xa Step 2 Here our f(x) = x,g(x) = and a = then x L = limg(x) ln f(x) x 1 ln x = lim( xln (x) = lim x = which is an indeterminate form. x x So we can apply l’hopital’s rule. ln x dxln x) lim x = lim d(x) x x dx d 1 d dx (ln x) = xnd dx(x) = 1 d 1 Thus lim ln = lim ddln x= lim = lim = 1 1 = 0 x x x dxx) x 1 x x Thus L = 0

Step 3 of 4

Chapter 4, Problem 40RE is Solved
Step 4 of 4

Textbook: Calculus: Early Transcendentals
Edition: 1
Author: William L. Briggs, Lyle Cochran, Bernard Gillett
ISBN: 9780321570567

This full solution covers the following key subjects: check, evaluate, forms, graphing, Limits. This expansive textbook survival guide covers 85 chapters, and 5218 solutions. Calculus: Early Transcendentals was written by and is associated to the ISBN: 9780321570567. The full step-by-step solution to problem: 40RE from chapter: 4 was answered by , our top Calculus solution expert on 03/03/17, 03:45PM. Since the solution to 40RE from 4 chapter was answered, more than 304 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Calculus: Early Transcendentals, edition: 1. The answer to “? 0 1 ,0 ,? forms ?Evaluate the following limits. Check your results by graphing. limx 1/x x??” is broken down into a number of easy to follow steps, and 18 words.

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