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Regress.NumericDerive Method
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Numerical derivative for regress function.

C#
public NumericDerive(TRegressFun RegressFun, double X, double Y, TVec Pars, TVec Grad);
Remarks

Routine calculates the derivatives of the regression function RegressFun at (X,Y) by numerical differentiation. The results of differentation are returned in Grad vector. The Length and Complex properties of Grad vector are NOT adjusted automatically.

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