40 (a) Evaluate the integral: / da x2 + 4 Your answer should be in the form kT, where k is an integer. What is the value of k? d 1 -arctan(x): dx Hint: x2 + 1 k = 5 (b) Now, let's evaluate the same integral using a power series. First, find the power series for the function 40 f(x) = 7. Then, integrate it from 0 to 2, and call the result S. S should be an infinite series. x2 + 4 What are the first few terms of S? ao = a2 аз a4 = (c) The answers to part (a) and (b) are equal (why?). Hence, if you divide your infinite series from (b) by k (the answer to (a)), you have found an estimate for the value of T in terms of an infinite series. Approximate the value of T by the first 5 terms. ||

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.1: Equations
Problem 75E
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Question
40
dx
+ 4
(a) Evaluate the integral:
Your answer should be in the form ka, where k is an integer. What is the value of k?
d
1
arctan(x)
dx
Hint:
x2 + 1
k
(b) Now, let's evaluate the same integral using a power series. First, find the power series for the function
40
f(x) =
7. Then, integrate it from 0 to 2, and call the result S. S should be an infinite series.
x2 + 4
What are the first few terms of S?
= Op
ai =
аз
a4
(c) The answers to part (a) and (b) are equal (why?). Hence, if you divide your infinite series from (b) by
k (the answer to (a)), you have found an estimate for the value of T in terms of an infinite series.
Approximate the value of T by the first 5 terms.
(d) What is the upper bound for your error of your estimate if you use the first 9 terms? (Use the
alternating series estimation.)
Transcribed Image Text:40 dx + 4 (a) Evaluate the integral: Your answer should be in the form ka, where k is an integer. What is the value of k? d 1 arctan(x) dx Hint: x2 + 1 k (b) Now, let's evaluate the same integral using a power series. First, find the power series for the function 40 f(x) = 7. Then, integrate it from 0 to 2, and call the result S. S should be an infinite series. x2 + 4 What are the first few terms of S? = Op ai = аз a4 (c) The answers to part (a) and (b) are equal (why?). Hence, if you divide your infinite series from (b) by k (the answer to (a)), you have found an estimate for the value of T in terms of an infinite series. Approximate the value of T by the first 5 terms. (d) What is the upper bound for your error of your estimate if you use the first 9 terms? (Use the alternating series estimation.)
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