Find sum:1 + (1/2)^2 + (1/3)^2 .........∞Only hints needed...not the full solution ..

The sequence converges to pi²/6. Ive once saw solving this series with FOURIER SERIES.I dont remember the solution but hopefully u should ask FOURIER SERIES in the forum for further understanding. 

Approved

Ya..even i saw...Its pi²/6...There isnt any other method?Maybe Vn method?

No , I dont think such a question can be resolved by Vn . The question is a little complex and needs advanced mathematics for its answer