Question: 4 Consider the function x x x 3 x2 As in the last problem find f x showing all work and use the graph of

4 Consider the function x x x 3 x2 As in the last problem find f x showing all work and use the graph of this function to estimate where fx is concave up and where fx is concave down You don t need to include sketch of the graph of f x in your answer

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