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For each problem, find the x-values of all critical points, and find the open intervals where the function is increasing and decreasing. Describe each critical

For each problem, find the x-values of all critical points, and find the open intervals where the function is increasing and decreasing. Describe each critical point as a local minimum or local maximum. f (x) = x4+ 2x3 - 2x2 + 2 f (x) = (x2 -4)3

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