1. Suppose f (x) = x. Find the lower and upper riemann sum when a = 0 and b = 2 for a general n.
2. Suppose f (x) = 3x. Find the lower and upper riemann sum when a = 0 and b = 1 for a general n
3.Suppose f (x) = 2x. Find the lower and upper riemann sum when a = 0 and b = 1 for a general n.
4. Suppose f (x) = 2x. Find the lower and upper riemann sum when a = 0 and b = 1 for a general n