1. The problem statement, all variables and given/known data evaluate integral (0, 1) f(x)=e^x 2. Relevant equations integral (a,b) f(x) dx = lim n-> infinity, sum of (i = 1, n) f(xi*)Deltax where : delta x = b-a/n xi*= a+(delta xi) 3. The attempt at a solution Deltax= 1-0/n = 1/n xi*=0+(1/n)i = i/n f(xi*)Deltax = (e^(i/n)) (1/n) SUM OF:(e^(i/n)) (1/n) (1/n) SUM OF:((e^(i/n)) i hope i was somewhat correct up till this point. Now i have no idea what summation formula to use here as the basic k=kn , i=n(n+1)/n and i^2=n(n+1)(2n+1)/6 dont seem to be very useful.