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From: Arthur G <gorramfreak+news@gmail.com>
Newsgroups: comp.soft-sys.matlab
Date: Wed, 12 Mar 2008 10:29:21 -0400
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Subject: Re: linear regression with a nonlinear constraint
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On 2008-03-12 05:33:01 -0400, "Santiago Mazuelas" <mazuyo@hotmail.com> said:
> Ok but I want a solution that do not need a initial guess.
> I realize that my problem is non linear indeed, but maybe
> not too much non linear..

Are you sure that's what you mean?

All numerical solvers require some sort of initial guess. Even if you 
don't specify one, the solver is calculating its own initial guess.