Question

If the sum of first m terms of an AP is 3m square +4m ,then what is its pth term ?

Answer 1

Answer:

um of m term = Sm = 4m^2 - m mth term = Tm = Sm - Sm - 1 Tm = (4m^2 - m) - (4(m - 1)^2 - (m - 1)) = (4m^2 - m) - (4(m^2 - 2m + 1) - (m - 1)) = 4m^2 - m ...