" 2."ES_(i)=n^(2)p" and "S_(m)=m^(2)p,m!=n," in an A.P.,prove that "S_(p)=p^(3)" ."

If S_(m)=m^(2) p and S_(n)=n^(2)p , where m ne n in an AP then prove that S_(p) =P^(3)

In an A.P., prove that : T_(m+n) + T_(m-n) = 2*T_(m)

In an A.P., prove that : T_(m+n) + T_(m-n) = 2*T_(m)

If in an A.P.S_(n)=n^(2)p and S_(m)=m^(2)p, then S_(p) is equal to

If in an A.P, S_n=n^2p and S_m=m^2p , then prove that S_p is equal to p^3

The sum of first n terms of an A.P. is S_n .If S_n=n^2p and S_m=m^2p(mnen) .Show that S_p=p^3 .

If in an A.P, S_n=n^2p and S_m=m^2p , then S_p is equal to

If S_(n)=3n^(2)+2n, Then prove that series is in A.P

If in an A.P.S_(n)=n^(2)q and S_(m)=m^(2)q, where S_(r) denotes the sum of r terms of the A.P.then S_(q) equals (q^(3))/(2) b.mnq c.q^(3) d.(m^(2)+n^(2))q