Let {an} be such that an 0 and let lim an+1| JanT = 0.5. Which of the following statements is always true? 8. a) The series (-1)"+'an converges absolutely. n+1 n=1 b) The series (-1)"+lan converges conditionally. n=1 c) The series (-1)"+lan diverges. n=1 d) None of the above. Let {an} be such that an #0 and let lim antil = 1. Which of the following statements is always true? Tan n00 a) The series E(-1)"+'an converges absolutely. n=1 b) The series (-1)"+'an converges conditionally. n=1 c) The series (-1)"+'an diverges. n+1 n=1 d) None of the above.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Let {an} be such that an 0 and let lim
|an+1|
|anl
=0.5. Which of the following statements is always true?
||
a) The series E(-1)"+'an converges absolutely.
n=1
b) The seriesE(-1)"+1a
an converges conditionally.
n=1
c) The series E(-1)"+lan diverges.
n+1
n=1
d) None of the above.
Let {an} be such that an 0 and let lim
|an+1]|
|an|
1. Which of the following statements is always true?
a) The series E(-1)"+'an converges absolutely.
n+1
n=1
b) The series
(-1)"+'an converges conditionally.
n=1
c) The series (-1)"+!an diverges.
n=1
d) None of the above.
Transcribed Image Text:Let {an} be such that an 0 and let lim |an+1| |anl =0.5. Which of the following statements is always true? || a) The series E(-1)"+'an converges absolutely. n=1 b) The seriesE(-1)"+1a an converges conditionally. n=1 c) The series E(-1)"+lan diverges. n+1 n=1 d) None of the above. Let {an} be such that an 0 and let lim |an+1]| |an| 1. Which of the following statements is always true? a) The series E(-1)"+'an converges absolutely. n+1 n=1 b) The series (-1)"+'an converges conditionally. n=1 c) The series (-1)"+!an diverges. n=1 d) None of the above.
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