Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 25RE: Use the formula for the sum of the first nterms of a geometric series to find S9 , for the series...
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Question
11. Evaluate the following geometric series, (find its sum) or show that it diverges.
![11. Evaluate the following geometric series, (find its sum) or show that it diverges.
сos(nπ)
5n
a) Σ=o
n=0
enπ
b) Σ=o"
n=0
πne](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcad422bc-64ba-4541-be23-0cacc94d0349%2F6c53dfa7-2e8f-4bf6-83e2-cfcbfb9caee3%2Ff8htz9s_processed.png&w=3840&q=75)
Transcribed Image Text:11. Evaluate the following geometric series, (find its sum) or show that it diverges.
сos(nπ)
5n
a) Σ=o
n=0
enπ
b) Σ=o"
n=0
πne
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