For the funadion given below, find a formula for the Riemann som oblained by dividing the interval [a, b] inlo 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]. ((x) - 2x Over the interval [0,3] Find a formula for the Riemann sum. 3. =