If sum of `n` terms of a sequence is given by `S_n = 3n^2 - 5n + 7` & `t_r` represents its `r^(th)` term then

If sum of n terms of a sequence is given by S _(n) = 2n ^(2) - 4n, find its 50^(th) term.

If the sum of n terms of a sequence is given by S_(n)=3n^(2)-2nAA n in N , then its 10th term is

If sum of n terms of a sequence is given by S_(n)=2n^(2)+3n . Find its 50^(th) term.

Find the sum of n terms of the sequence given by a_(n)=(3^(n)+5n), n in N .

The n^(th) term of a sequence is given by T_n = 2n + 7. Show that it is an A.P. Also, find its 7^(th) term.

If the sum of n terms of an A.P. is given by S_(n) =(3n^(2)+2n) , find its n^(th) term.

If the sum of the first n terms of an AP is given by S_n=3n^2-n then find its nth terms, first term and common difference

The sum of the first n terms of an AP is given by S_(n) = 3n^(2) — 4n . Determine the AP and the 12th term.