(a) Find the average value of f on the given interval.
(b) Find such that fave = f(c).
(c) Sketch the graph of f and a rectangle whose area is the same as the area under the graph of f.
(1) f(x) = (x - 3)2, [2, 5]
(2) f(x) = 2 sin x - sin 2x, [0, π]