Determine if the following series converges or diverges. If it converges determine its sum.
Ʃ1/(i2-1) where the upper limit is n and the index i=2
The General Formula for the partial sum was given:
The Attempt at a Solution
I have no idea where to start. I tried to get the General Formula, but I am really confused as to how to even start. I tried to split the function with partial fractions and somehow got 1/(2(i+1))-1/(2(i-1))