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OpenStudy (anonymous):
sigma n=1 to infinity of cos(n), how to show it converges or diverges?
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OpenStudy (anonymous):
Try the limit test for divergence. What is \[\lim_{n\to\infty}\cos n~?\]
OpenStudy (anonymous):
If it's not zero, it diverges.
OpenStudy (anonymous):
Oh yeah the limit test, thanks, I think I know how to do it now
OpenStudy (anonymous):
yw
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