anonymous
  • anonymous
Does the series cos n /(n^3) converge or diverge?
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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anonymous
  • anonymous
n^3 would converge
anonymous
  • anonymous
what test would you use to prove it?
anonymous
  • anonymous
p test

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anonymous
  • anonymous
I am assuming it is from 1 to infinity
anonymous
  • anonymous
Yes, it would be converge
anonymous
  • anonymous
yep! I just don't know how to prove it with a test
anonymous
  • anonymous
http://mathforum.org/library/drmath/view/74703.html
anonymous
  • anonymous
start with just 1/n^3
anonymous
  • anonymous
could you use the comparison test?
anonymous
  • anonymous
yes, 1/n^3 always converge
anonymous
  • anonymous
cos (x)<1
anonymous
  • anonymous
It does not require a paragraph of an explanation, you could either use the link I showed you for an example as they do some hardcore calculating or you can follow what modphysnoob is doing.

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