Let f (x) = 3x^4 −4x^3 −12x^2 + 1, deﬁned on R.
(a) Find the intervals where f is increasing, and decreasing.
(b) Find the intervals where f is concave up, and concave down.
(c) Find the local maxima, the local minima, and the points of inflection.
(d) Find the Maximum and Minimum Absolute of f over [−2.3]
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