5. Let f(x) = 1:2 5 on the interval [2, 4], and n = 3. (a) Sketch the graph of the function on this interval. (b) Calculate the width Ad: of the the 3 subintervals, and compute the gridpoints $0,131, x2, :53. (c) Illustrate the right-endpoint Riemann sum by sketching the appropriate rectangles on your graph from (a). (d) Calculate the corresponding sum. Explicitly write out the area of each rectangle, then use a calculator to add them together