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KaleidaGraph’s General curve fit is based on the Levenberg-Marquardt algorithm. Our reference for this curve fit comes from Numerical Recipes in C, William H. Press, Brian P. Flannery, Saul A. Teukolsky, William T. Vetterling, Cambridge University Press. The section of this book which shows the formulas used in calculating the parameters and errors for the General curve fit is available as a PDF file.

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Posted in: General Curve Fit