Question

5- For f ( x ) = − x 3 + 7 x 2 − 15...

5- For f ( x ) = − x 3 + 7 x 2 − 15 x

a) Find the intervals on which f is increasing or decreasing. Find the local (or absolute) maximum and minimum values of f.

b) Find the intervals of concavity and the inflection points.

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