Question

x-y/x+y , 3x-2y/x+y ,5x-3y/x+y........to n terms find sum of AP

Answer 1

This is the answer. It may help you.

Answer 2

Answer

sum=2(x+y)n{n(2x−y)−y}

Explanation

sum of n terms =n/2(2a+(n−1)d)

here a=x−y/x=y

        d=(3x−2y/x+y)−(x−y/x+y)

          =2x−y/x+y

hence sum=2(x+y)n{n(2x−y)−y}