On Mon, 16 Nov 2009 13:39:50 +0100, Invisible <voi### [at] devnull> wrote:
> Suppose that the first derivative of f(x) is g(x).
>
> What the hell is the derivative of f(f(x))?

http://www.google.com/search?q=What+is+the+derivative+of+a+composite+function%3F

http://en.wikipedia.org/wiki/Chain_rule

Basic high-school level math. I am slightly surprised that you did not  
know it, though I am not in the least surprised that you did not bother to  
google for it.



-- 
FE

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