1. Complete the following steps for f(x)= 9 - x on [3,8]; n=5 :

a) Sketch the graph of the function on the given interval.

b) Calculatex and the grid points x0, x1, ......, xn

c) Illustrate the left and right Riemann sums. Then determine which Riemann sum underestimates and which sum overestimates the area under the curve.

d) Calculate the left and right Riemann sums