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From: Walter Roberson <roberson@hushmail.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Limits of Symbolic Toolbox
Date: Thu, 30 Sep 2010 15:52:56 -0500
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On 10-09-30 02:55 PM, Perry wrote:
> Aren't I telling matlab that I am solving for X3, Y3, X4, Y4, X5, Y5 by
> the first part of the command?
> [X3,Y3,X4,Y4,X5,Y5]=solve( '.........

No. You are telling it which arbitrary variable names to assign the solutions 
to. The order that will actually be solved if you do not specify which 
variables to solve for in the solve() call, is _approximately_ X then Y then Z 
then all the other variables in lexographic order (I'd have to find the 
reference again for the exact order.)