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If f(x) = 5x 2/3 2x 5/3 Find The intervals of increase or decrease. The Local maximum and minimum values. The intervals of concavity

If f(x) = 5x ^2/3 – 2x ^5/3

Find

The intervals of increase or decrease.
The Local maximum and minimum values.
The intervals of concavity and the inflection points.

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