1. Consider the series V12(-1)" 3" (2n + 1)* n=0 (a) Use any test for convergence/divergence to show that the series converges. V12(-1)" 3" (2n + 1) (b) It is possible to show that the sum of the series is T, in other words, the series n=0 converges to the number T. (You do NOT need to prove this, but it can be done somewhat easily using a Taylor series expansion of arctan x.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 68E
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V12(-1)"
3" (2n + 1)"
1. Consider the series
n=0
(a)
Use any test for convergence/divergence to show that the series converges.
V12(-1)"
3" (2n + 1)
(b)
It is possible to show that the sum of the series
is T, in other words, the series
n=0
converges to the number T. (You do NOT need to prove this, but it can be done somewhat easily using a
Taylor series expansion of arctan x.)
Suppose you want to use a partial sum of this series to estimate the value of T to an accuracy of within
0.0001. Would using the first 8 terms of the series be enough to ensure you get an accuracy of within
0.0001? (8 terms means the terms where n = 0, 1, 2, 3, ..., 7.)
Hint: Use Theorem 5.14.
Transcribed Image Text:V12(-1)" 3" (2n + 1)" 1. Consider the series n=0 (a) Use any test for convergence/divergence to show that the series converges. V12(-1)" 3" (2n + 1) (b) It is possible to show that the sum of the series is T, in other words, the series n=0 converges to the number T. (You do NOT need to prove this, but it can be done somewhat easily using a Taylor series expansion of arctan x.) Suppose you want to use a partial sum of this series to estimate the value of T to an accuracy of within 0.0001. Would using the first 8 terms of the series be enough to ensure you get an accuracy of within 0.0001? (8 terms means the terms where n = 0, 1, 2, 3, ..., 7.) Hint: Use Theorem 5.14.
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