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Please help me with these three questions. 1. Consider the function f(x) = x4 - x3 - 3x2 + 8x + 1 aand answer the

Please help me with these three questions.

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1. Consider the function f(x) = x4 - x3 - 3x2 + 8x + 1 aand answer the following questions. (a) (3 points) Find all values so that f"(x) = 0 (b) (5 points) On what intervals is f concave up and concave down? (c) (3 points) State any inflection points (in the form (r, y))

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