9. Determine whether the series is absolutely or conditionally convergent or divergent: (−1)" n’ – n-1 10 7n + 2 α. Σε1" 2n + n+1 n=l a. Σ(-1)" n=1 b. Σ n=1 vn c. Σ(-1)"5" n=0 1

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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b,c,d

9. Determine whether the series is absolutely or conditionally convergent or divergent:
10
7n + 2
d. Σ(1)"
n=l
a.
Σ(-1)".
n=1
b. Σ
(−1)"
n=1 Nn
c. Σ(-1)"5"
n=0
1
n’ – n-1
2n + n+1
Transcribed Image Text:9. Determine whether the series is absolutely or conditionally convergent or divergent: 10 7n + 2 d. Σ(1)" n=l a. Σ(-1)". n=1 b. Σ (−1)" n=1 Nn c. Σ(-1)"5" n=0 1 n’ – n-1 2n + n+1
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