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## Homework Statement

I'm trying to find a formula for the nth derivative for the function f(x)=x

^{1/3}

## The Attempt at a Solution

I know that it has alternating signs so it start with (-1)

^{n+1}and I know the exponent for it is x

^{(1/3-n)}but I'm having a hard time figuring out the coefficient of x.

For the fourth derivative I have 1/3(1/3-1)(1/3-2)(1/3-3)x

^{(1/3-4)}

The example our teacher gave us was x

^{-1}which was much easier in my opinion...