Question

If nth term of AP is 1/nand mth term of AP is 1/m,prove that sum of mn term is equal to 1/2(mn+1)​

Answer 1

Answer:

Tn = a + (n-1)d=1/n

Tm= a +(m-1)d=1/m

subtract

Tn - Tm = (n - m)d = 1/n - 1/m = (m-n)/mn

d = -1/mn

This question is wrong. It should be nth term is 1/m and mth term is 1/n

Please do not harass by giving wrong question.