- #1
fubag
- 105
- 0
Hi I have a few problems with regard to infinite series and sequences:
1.) cos(n) / (n^2) summation from n = 0 to infinity
2.) cos(pi*n)/n summation from n = 0 to infinity
3.) sin(n) summation from 0 to infinity
I have to tell whether they absolutely converge, conditionally converge, or diverge.
I tried using the ration/root/limit test for them but nothing seemed to help.
any feedback will be greatly appreciated.
1.) cos(n) / (n^2) summation from n = 0 to infinity
2.) cos(pi*n)/n summation from n = 0 to infinity
3.) sin(n) summation from 0 to infinity
I have to tell whether they absolutely converge, conditionally converge, or diverge.
I tried using the ration/root/limit test for them but nothing seemed to help.
any feedback will be greatly appreciated.