If nth term of a sequences is `2n+b, where a,b` are constants, is the this sequence an A.P.?

If nth term of a sequences is 2n+b, wherea,b are constants,is the this sequence an A.P.?

If the sum to n terms of a sequences is 2n^(2)+4, find its nth.Is this seqwuence as AP?

If nth term of a sequences is 4n^2+1, find the sequence. Is this sequences at A.P.?

The n^(th) term of a sequence is given by a_n=2n+7 . Prove that the. sequence is an A.P. Also find its common difference.

If nth term of a sequences is 4n^(2)+1, find the sequence.Is this sequences at A.P.?

If the sum of the first n terms of a sequence is of the form An^2+ Bn , where A, B are constants independent of n, show that the sequence is an A.P. Is the converse true ? Justify your answer.

If the sum to n terms of a sequence be n^2+2n then prove that the sequence is an A.P.

If the nth term of a sequence is an expressionof first degree in n,show that it is an A.P.

If the sum to n terms of a sequence be n^(2)+2n then prove tht the sequence is an A.P.