Path: news.mathworks.com!not-for-mail
From: "Bruno Luong" <brunoluong@yahoo.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Solving Equation
Date: Fri, 23 Nov 2007 08:57:02 +0000 (UTC)
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"Bruno Luong" <brunoluong@yahoo.com> wrote in message
<fi63hb$2o0$1@fred.mathworks.com>...
> sumnaray@gmail.com wrote in message 
> 
> > 
> > But I am afraid, I still get NaN in my result. I am trying
> this with
> > 
> > M = [0.5 -0.5 0.5 0; 0 1 0 0; -0.5 -0.5 1.5 0;  0 0 0 0]
> 
> In order the problem to be well-posed, the input M needs to
> be a full-rank matrix (inversible). Your matrix isn't. That
> is why you get NaN. 
> 

Wait a minute, I'm not certain about this statement. I think
that the condition on M for well-posed is more complex than
that.

Bruno