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Make a sign diagram for the derivative of the function. f (x ) = x3 - 3x2 - 9x + 7 f' ( x )

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Make a sign diagram for the derivative of the function. f (x ) = x3 - 3x2 - 9x + 7 f' ( x ) > v v o f' ( x ) = V V O f' ( x ) v v o X = X = Find all open intervals of increase and decrease. (Enter your answers using interval notation.) increase (-0o, - 1), (3,00) decrease (-1,3)

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