- #1
andrey21
- 476
- 0
Using the fact that sum of series 1/n^2 is (pi)^2/6 FInd the following:
cos(2npi/3)/(n^2)
Not sure really where to start on this one any help would be great.
cos(2npi/3)/(n^2)
Not sure really where to start on this one any help would be great.