Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
Related questions
Question
![Find the radius of convergence and the interval of convergence.
00
Σ
2 k(k + 1)
k=1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F27fa4110-4bcd-440d-826a-bf9e1470f71f%2Fc5406501-e3f9-4987-9a3d-e3dcd478f399%2Fjvhiaku_processed.png&w=3840&q=75)
Transcribed Image Text:Find the radius of convergence and the interval of convergence.
00
Σ
2 k(k + 1)
k=1
![We found that the power series converges on the interval (-1, 1),
but the ratio test is inconclusive at the values x = -1 and x = 1.
First examine x = - 1 by substituting x = -1 into the series. What
series results from this substitution?
-1
Σ
k(k + 1)
k=1
(-1)*
k(k + 1)
k=1
1
Σ
k(k + 1)
k=1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F27fa4110-4bcd-440d-826a-bf9e1470f71f%2Fc5406501-e3f9-4987-9a3d-e3dcd478f399%2F0ihajrw_processed.png&w=3840&q=75)
Transcribed Image Text:We found that the power series converges on the interval (-1, 1),
but the ratio test is inconclusive at the values x = -1 and x = 1.
First examine x = - 1 by substituting x = -1 into the series. What
series results from this substitution?
-1
Σ
k(k + 1)
k=1
(-1)*
k(k + 1)
k=1
1
Σ
k(k + 1)
k=1
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