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Re: Numerical Differentiation

Mark James wrote:
> Does anyone know of a function that calculates the derivative of
> a function (that can't be differentiated symbolically) at a given
> point by numerical means?  I can't find it as a built-in or in the
> standard packages.  Thanks.

The function ND in the package NumericalMath`NLimit does this.

I mention in passing that numerical derivatives will be computed
automatically in the next release of Mathematica.
Rob Knapp
Wolfram Research, Inc.


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