The Sum 1/(1+(5/n))*5/n+1/(1+10/n))*5/n+1/(1+15/n)*5/n+.....1/(1+5n/n))*5/n
is a riemann sum for a definite integral
⌠b
⌡1f(x) dx
using a partition of the interval [1,b] into n subintervals of equal length,
Then the upper limit of integration must be: b =
and the integrand must be the function f(x) =