Re: How I can fit data with a parametric equation?

*To*: mathgroup at smc.vnet.net*Subject*: [mg91854] Re: How I can fit data with a parametric equation?*From*: Bill Rowe <readnews at sbcglobal.net>*Date*: Wed, 10 Sep 2008 05:09:26 -0400 (EDT)

On 9/9/08 at 7:07 AM, dinodeblasio at gmail.com wrote: >Hello everybody, I have a list of {x,y} data and from a theoretical >calculation I know that the data should be fitted by an equation, >for example: >y=ax+bx+c; where a, b, c are constant parameters. >The question is how i can find the best fit for my data finding the >value of this parameters. >Do mathematica has a specific function for that? Yes, FindFit. Assume data is a list of {x,y} pairs. Then FindFit[data, a x + b, {a,b}, x] will find values for a and b that represent the best fit (least squares) line. FindFit supports non-linear models as well