Does the series ∞∑n=1sin2(n)n
converge?
I've tried to apply some tests, and I don't know how to bound the general term, so I must have missed something. Thanks in advance.
Answer
Hint:
Each interval of the form [kπ+π6,(k+1)π−π6) contains an integer nk. We then have, for each k, that sin2(nk)nk≥(1/2)2(k+1)π. Now use a comparison test to show your series diverges.
No comments:
Post a Comment