Path: news.mathworks.com!not-for-mail
From: "Dmitry Dmitry" <klio2003@list.ru>
Newsgroups: comp.soft-sys.matlab
Subject: nonlinear system of equations
Date: Sat, 8 Mar 2008 15:40:22 +0000 (UTC)
Organization: The MathWorks, Inc.
Lines: 19
Message-ID: <fquc16$r4u$1@fred.mathworks.com>
Reply-To: "Dmitry Dmitry" <klio2003@list.ru>
NNTP-Posting-Host: webapp-05-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1204990822 27806 172.30.248.35 (8 Mar 2008 15:40:22 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Sat, 8 Mar 2008 15:40:22 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 366475
Xref: news.mathworks.com comp.soft-sys.matlab:456115


Hello!!!

My problem is connected with solving the NONLINEAR SYSTEM 
OF EQUATIONS in Matlab, which has the following 
peculiarities:

1) The number of equations is very big (>30)
2) The accuracy required is very high

FSOLVE function doesn't provide the accuracy I need (the 
relative error between the known and found solutions is 
>10%). 

What methods and functions in Matlab would you recommend? 
If necessary, I can download the system of equations.

Thanks in advance

Dmitry