Question: In the answer they get 1/e. I'm not sure how to get that interval. - calculus (derivatives) Find the intervals on which f is increasing

In the answer they get 1/e. I'm not sure how to

In the answer they get 1/e. I'm not sure how to get that interval. - calculus (derivatives)

get that interval. - calculus (derivatives) Find the intervals on which f

Find the intervals on which f is increasing and the intervals on which it is decreasing [(x) = 3x Inx

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