# Thread: General formula of derivative

1. ## General formula of derivative

I'm trying to find the general formula for the derivative of sqrt(x). I have the x^(1/2-1) part by I can't figure out the formula for the coefficient. Can anyone help me? I know it goes 1/2, -1/4, 3/8, -15/16.....i just cant figure out the formula.

2. are you asking for the $n^{th}$ derivative of $\sqrt{x}$?

3. yes.