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possible to show the the series 2 3" (2n + 1) to the number n. (You do NOT need to prove this, but it can be ies expansion of arctan z.)

possible to show the the series 2 3" (2n + 1) to the number n. (You do NOT need to prove this, but it can be ies expansion of arctan z.)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Q1b
V12(-1)" V12(-1)" 3" (2n + 1) Consider the series Note: this was changed from 3" (2n + 1) n-0 (a) Use any test for convergence/divergence to show that the series converges. It is possible to show that the sum of the series V12(-1)" 3" (2n + 1) (b) is 7, in other words, the series n=0 converges to the number 7. (You do NOT need to prove this, but it can be done somewhat easily using a Taylor series expansion of arctan a.) Suppose you want to use a partial sum of this series to estimate the value of 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.) Note: This was changed from "7 terms". ..... Hint: Use Theorem 5.14.
Transcribed Image Text:V12(-1)" V12(-1)" 3" (2n + 1) Consider the series Note: this was changed from 3" (2n + 1) n-0 (a) Use any test for convergence/divergence to show that the series converges. It is possible to show that the sum of the series V12(-1)" 3" (2n + 1) (b) is 7, in other words, the series n=0 converges to the number 7. (You do NOT need to prove this, but it can be done somewhat easily using a Taylor series expansion of arctan a.) Suppose you want to use a partial sum of this series to estimate the value of 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.) Note: This was changed from "7 terms". ..... Hint: Use Theorem 5.14.
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