Path: news.mathworks.com!not-for-mail From: "John D'Errico" <woodchips@rochester.rr.com> Newsgroups: comp.soft-sys.matlab Subject: Re: plotting transcendental etqution set curve Date: Sun, 1 Aug 2010 21:00:22 +0000 (UTC) Organization: John D'Errico (1-3LEW5R) Lines: 27 Message-ID: <i34n96$j33$1@fred.mathworks.com> References: <i34fol$59u$1@fred.mathworks.com> <i34g87$55c$1@fred.mathworks.com> <i34jb3$etm$1@fred.mathworks.com> Reply-To: "John D'Errico" <woodchips@rochester.rr.com> NNTP-Posting-Host: webapp-02-blr.mathworks.com Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: fred.mathworks.com 1280696422 19555 172.30.248.37 (1 Aug 2010 21:00:22 GMT) X-Complaints-To: news@mathworks.com NNTP-Posting-Date: Sun, 1 Aug 2010 21:00:22 +0000 (UTC) X-Newsreader: MATLAB Central Newsreader 869215 Xref: news.mathworks.com comp.soft-sys.matlab:658139 "RAB John" <dkkddkkd@walla.com> wrote in message <i34jb3$etm$1@fred.mathworks.com>... > "us " <us@neurol.unizh.ch> wrote in message <i34g87$55c$1@fred.mathworks.com>... > > "RAB John" <dkkddkkd@walla.com> wrote in message <i34fol$59u$1@fred.mathworks.com>... > > > Hello you Matlab Guru's, > > > > > > I have 2 transcendental equations in 3 variables (1 degree of freedom). I wish to efficiently plot equation set curve (or multiple curves as uniqness is not promised). > > > > > > Any suggestions rather than just placing values into one of the variables and "FOR" it? > > > > > > Thx, > > > RAB > > > > rather than words: show some ML code CSSMers can play with... > > > > us > > cos(x1)+3cos(x2)-2cos(x3) = pi/3 > -2cos(x1)+cos(2x2)+cos(x3) = pi/6 > > This equation set definitely have at least one curve as a solution. I wish to plot it wisely. The solution set (which does exist) will be a 1-manifold, (actually, a set of disjoint 1-manifolds) curves that lie in the R^3 space (x1,x2,x3). These curves each look rather like a bent ellipse, folded in half upon themselves. John