Find the sum: `(n^2-1^2)+2(n^2-2^2)+3(n^2-3^2)+...+n(n^2-n^2)`

Find the sum of the following series to n term: (n^2-1^2)+2(n^2-2^2)+3(n^2-3^2)+……...

Find the sum of the following series to n term: (n^2-1^2)+2(n^2-2^2)+3(n^2-3^2)+……...

The sum to n terms of the series (n^(2)-1^(2))+2(n^(2)-2^(2))+3(n^(2)-3^(2))+ . . . . , is

The sum to n terms of the series (n^(2)-1^(2))+2(n^(2)-2^(2))+3(n^(2)-3^(2))+ . . . . , is

If =n(n^(2)-1^(2))(n^(2)-2^(2))(n^(2)-3^(2))......*(n^(2)-r^(2)),n>r,n in N then P is divisibe by (n^(2)-3^(2))......*(n^(2)-r^(2)),n>r,n in N

Find the sum Sigma_(n=1)^(oo)(3n^2+1)/((n^2-1)^3)

lim_(n->oo)(1/(n^2+1)+2/(n^2+2)+3/(n^2+3)+....n/(n^2+n))

lim_(n->oo)(1/(n^2+1)+2/(n^2+2)+3/(n^2+3)+....n/(n^2+n))

Find the sum of 1^1 n + 2^2 (n - 1) + 3^2 (n - 2) + 4^2 (n -3) ……upto 'n' terms.

Find the sum up to n terms :n.1+(n-1).2+(n-2)3+(n-3).4+....