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Article #1171

Solving Nonlinear EQU's with PCMATLAB ?

#1171
From: Hannu Koivisto
Date: Thu, 19 Jan 1989 13:26
26 lines
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I have used PC-MATLAB for data analysis etc. for a long time, but I have
not noticed before, that it lacks a nonlinear equation solver.

It would  be rather straightforward to write a M- or MEX-file for this 
for example on the basis of Numerical Recipes. 
But it's so commonly needed, that I decided to make a query before I start
to write one. So:

Do you know, if there exists (a public domain or comm.)  M- or MEX-function,
which finds one or more N-dimensional solution vectors x such that

	F(x) = 0

Where F is the N-dimensional vector-valued function whose components are
the individual equations to be satisfied simultaneously.


Thanks in advance

------------------------------------------------------------------------
Hannu Koivisto	    hannu@tut.fi            (internet -style address)
		    koivisto@fintuta.bitnet (also via bitnet)
                    Tampere University of Technology, Control Engineering
		    P.O. Box 527,       33101 Tampere, FINLAND
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Message-ID: <164@karhu.tut.FI>
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mcvax!enea!kth!draken!tut!hannu

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!mcvax!enea!kth!draken!tut!hannu
From: hannu@tut.FI (Hannu Koivisto)
Newsgroups: sci.math.num-analysis,comp.sys.ibm.pc
Subject: Solving Nonlinear EQU's with PCMATLAB ?
Message-ID: <164@karhu.tut.FI>
Date: 19 Jan 89 13:26:09 GMT
Organization: Tampere University of Technology, Finland
Lines: 26