Posted by sarah on .
determine if the series is absolutely convergent and convergent
the sum from n=1 to infinity of
sin(n^2)/n^2
what series test should I use and how?
the ratio test?

calculus 
Count Iblis,
sin(n^2)/n^2  < 1/n^2 and sum from 1 to infinity of 1/n^2 converges (to pi^2/6 )