Question: For each function, give (and identify) any extrema and points of inflection. Give the interval(s), in interval notation, on which f is increasing, decreasing, f

For each function, give (and identify) any extrema and points of inflection. Give the interval(s), in interval notation, on which f is increasing, decreasing, f is concave up and f is concave down. a. f(x) = -x3 - 3x2 + 9x+12 b. g(x) = xe -4x

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