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is there an object to compute the derivative function of a signal?
don't know if derivative is the right term.. i mean: f(x)=x => f'(x)=1 f(x)=ln(x) => f'(x)=1/x f(x)=sin(x) => f'(x)=cos(x) ...
and a more question: has this anything to do with complex signals or fourier?
thanks
Federico