Curve Fitting

We wish to fit the "best" curve to the set of paired data points: (x1,Y1), (x2,Y2), …,(xN,YN). The mathematical expression for the calculated values is: yi = a1 f1(xi) + a2 f2(xi) + ( + an fn(xi) (5.2-1) where yi is the calculated value approximating the experimental value Yi. The above expression is a general linear least squares model since ... ................
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