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Solution: Approximating Finite Sums with IntegralsIn many

ISBN: 9780321884077 57

Solution for problem 26AAE Chapter 5

Thomas' Calculus: Early Transcendentals | 13th Edition

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Problem 26AAE

Approximating Finite Sums with Integrals

In many applications of calculus, integrals are used to approximate finite sums—the reverse of the usual procedure of using finite sums to approximate integrals.

For example, let’s estimate the sum of the square roots of the first n positive integers,  The integral

is the limit of the upper sums

Therefore, when n is large, will be close to 2/3 and we will have

The following table shows how good the approximation can be.

Use the result of Exercise 25 to evaluate

What can be said about the following limits?

Step-by-Step Solution:
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