Find the intervals in which `f(x)=6+12 x+3x^2-2x^3` is increasing or decreasing.
Find the intervals in which `f(x)=6+12 x+3x^2-2x^3` is increasing or decreasing.
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Correct Answer - (a) f(x) is increasing on `[-1, 2]`
(b) `f(x)` is decreasing on `[-oo, -1] uu [2, oo]`
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