Question: Let f(x) = 3x3 27x2 + 72x 14. Find the intervals of increase/decrease of f. Enter your answer using interval notation. If an answer does

Let f(x) = 3x3 27x2 + 72x 14. Find the intervals of increase/decrease of f. Enter your answer using interval notation. If an answer does not exist, enter DNE. Intervals of increase = Intervals of decrease =

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