For the function given below, find a formula for the Riemann sum obtained by dividing the interval [a,b] into n equal subintervals and using the right-hand endpoint for each c . Then take a limit of this sum as n -+ co to calculate the area under the curve over [a,b] f(x) = 8x over the interval [0.5] Find a formula for the Riemann sum. Sn =[ The area under the curve over [0,5] is |square units. (Type an integer or a simplified fraction.) Time Remaining: 01:13:35 Next