7. Sketch the graph of a function that satisfies all of the given conditions. f '(0) = f '(2) = f'(4) = 0, f '(x) > 0 if x < O or 2 < x < 4, -5- f'(x) < 0 if 0 < x < 2 or x > 4, -4- f"(x) > 0 if 1 < x < 3, f"(x) < 0 if x < 1 or x > 3 -6 -4 -3 -2 -1 0 3 4 7 -1 -2 -3 -4 -5-

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