Question

Write the nth term of an A.P. the sum of whose n terms is S_n.

 

Answer 1

We are given an A.P. the sum of whose n terms is S_n. So, to calculate the n^th term of the A.P. we use following formula,

 a_n = S_n - S_n-1

So, the n^th term of the A.P. is given by   a_n = S_n - S_n-1 .