Question

In an ap, the mth term is 1/n and the nth term is 1/m . The sum of first mn terms is

Answer 1

please mark it as a brainliest answer

Answer 2

Answer:

a + (m)d = \frac{1}{m} \\ \\ a + (m)d = \frac{1}{n} \\ \\ \frac{1}{n} - \frac{1}{m} = (m + 1 - n - 1) \\ \\ \frac{m - n}{mn} = (m + n)d \\ \\ (d = \frac{1}{mn})(a = \frac{1}{mn}) \\ \\ mn = a + (mn - 1)d \\ \\ \frac{1}{mn} + \frac{mn - 1}{mn} = 1[/tex]