GenFit function

Use the Matcad genfit function to fit the data to Antoine s equation. 

The genfit function requires the first derivatives of the function with respect to the parameters being fitted. 

Genfit-function with partial derivative from Mapie on the MAS... 

Guess parameters for nonlinear fitting algorithm (GenFit function) Finding max G" and corresponding y... 

In Mathcad 13, the function genfit has been significantly changed by developers. The user does not need to routinely (and tediously) create the function vector anymore. An expression for the approximatimi function is enough for computation of the sought parameters. 

The calculation algorithm, used by genfit, was also changed significantly (Fig. 4.17). One can now choose between options Levenb e r g Mar guar dt and Optimized Levenberg Marquardt (the latter is recommended when the function vector is absent). 

Apply function genfit. Compare the results of non-linear approximation to the results, obtained by linearization of the data. 

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