Question

sum of first m terms of an AP is 0.if the first term is a, then the sum of next n terms is​

Answer 1

Step-by-step explanation:

The sum of first m terms =m/2(2a+(m-1)d)

0=2am+dm2-dm

0=2am+(m2-m)d

-2am/m2-m=d

put it in the sum of next n terms =n/2(2a(n-1)d)

=(an2-a)-2am/m2-m