63 lines
2.9 KiB
HTML
63 lines
2.9 KiB
HTML
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<title>Description of sylvester3a</title>
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<meta name="description" content="solves iteratively ax+bxc=d">
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<div><a href="../index.html">Home</a> > <a href="index.html">.</a> > sylvester3a.m</div>
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<!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td>
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<td align="right"><a href="index.html">Index for . <img alt=">" border="0" src="../right.png"></a></td></tr></table>-->
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<h1>sylvester3a
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</h1>
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<h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="box"><strong>solves iteratively ax+bxc=d</strong></div>
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<h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="box"><strong>function x=sylvester3a(x0,a,b,c,d) </strong></div>
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<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="fragment"><pre class="comment"> solves iteratively ax+bxc=d</pre></div>
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<!-- crossreference -->
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<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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This function calls:
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<ul style="list-style-image:url(../matlabicon.gif)">
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</ul>
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This function is called by:
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<ul style="list-style-image:url(../matlabicon.gif)">
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<li><a href="dr1.html" class="code" title="function [dr,info]=dr1(dr,task)">dr1</a> Copyright (C) 2001 Michel Juillard</li></ul>
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<!-- crossreference -->
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<h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
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<div class="fragment"><pre>0001 <span class="comment">% solves iteratively ax+bxc=d</span>
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0002
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0003 <a name="_sub0" href="#_subfunctions" class="code">function x=sylvester3a(x0,a,b,c,d)</a>
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0004 a_1 = inv(a);
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0005 b = a_1*b;
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0006 d = a_1*d;
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0007 e = 1;
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0008 iter = 1;
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0009 <span class="keyword">while</span> e > 1e-8 & iter < 500
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0010 x = d-b*x0*c;
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0011 e = max(max(abs(x-x0)));
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0012 x0 = x;
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0013 iter = iter + 1;
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0014 <span class="keyword">end</span>
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0015 <span class="keyword">if</span> iter == 500
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0016 warning(<span class="string">'sylvester3a : Only accuracy of %10.8f is achieved after 500 iterations'</span>)
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0017 <span class="keyword">end</span></pre></div>
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<hr><address>Generated on Fri 16-Jun-2006 09:09:06 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address>
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