(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

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9. f(x) = (r – 3. [2, 5] 10. f(x) = V. [0. 4] 11. f(x) = 2 sin x - sin 2r, [0, 7] 12. f(x) = 2x/(1 + x). [0, 2]