Am 11.02.2009 15:50 schrieb Matt: >> >> but how do you find the derivative of f^n(x) wrt to n >> without having the fractional iterate before? > > You don't. I don't claim that this formula helps to find the > fractional iterate in the first place.
> iterates. All the formula does is provide a mechanical way of > transforming a known f^n(x) into the form f^n(x) = phi^-1(n + phi(x)).