2If nih term of a sequence is 4n2 + 1, find the sequence. Is this sequ

1.	2If nih term of a sequence is 4n2 + 1, find the sequence. Is this sequencean A.P.
Answer» n=1,a1=5n=2,a2=17n=3,a3=37d=a2-a1=17-5=12d=a3-a2=37-17=20This is not in A. P, because common diffrence is not same. Put n=1then a1=4(1)^2+1=5n=2then a2=4(2)^2+1=4*4+1=17a3=4(3)^2+1=36not an ap as the common difference is not equal. sequence and series lesson 1, -1, -1, 1, - 1 the sequence 1 statement for this sequence my 1,-1,1,-1 these qns series

2If nih term of a sequence is 4n2 + 1, find the sequence. Is this sequencean A.P.

Answer»

n=1,a1=5n=2,a2=17n=3,a3=37d=a2-a1=17-5=12d=a3-a2=37-17=20This is not in A. P, because common diffrence is not same.

Put n=1then a1=4(1)^2+1=5n=2then a2=4(2)^2+1=4*4+1=17a3=4(3)^2+1=36not an ap as the common difference is not equal.

sequence and series lesson 1, -1, -1, 1, - 1 the sequence 1 statement for this sequence

1,-1,1,-1 these qns series