Question

formula of sum of an ap​

Answer 1

Answer:

General Form of AP a, a + d, a + 2d, a + 3d, . . .

The nth term of AP an = a + (n – 1) × d

Sum of n terms in AP S = n/2[2a + (n − 1) × d]

Sum of all terms in a finite AP with the last term as 'l' n/2(a + l).

Answer 2

Answer:

the sum of an ap is , Sn=n/2(2a +(n-1)d)