Consider the Riemann sum of the function f(x) = cos(2x) on the interval (0,pi/2) with
n = 3 equal size subintervals, that uses the right endpoint of each subinterval as the sample
a) Write down the above sum using sigma notation; do not simplify or evaluate.
b) Evaluate the sum; simplify, but do not approximate.
Please help my teacher spent like 5 minutes on this in class and now its on our assignment.
Thanks in advance.