* Bug #13810 fixed - householder(v, k*v) returned column of %nan. Input parameters...
[scilab.git] / scilab / modules / linear_algebra / help / pt_BR / factorization / sqroot.xml
1 <?xml version="1.0" encoding="ISO-8859-1"?>
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16 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns3="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:id="sqroot" xml:lang="en">
17     <refnamediv>
18         <refname>sqroot</refname>
19         <refpurpose>fatoração hermitiana W*W'</refpurpose>
20     </refnamediv>
21     <refsynopsisdiv>
22         <title>Seqüência de Chamamento</title>
23         <synopsis>sqroot(X)</synopsis>
24     </refsynopsisdiv>
25     <refsection>
26         <title>Parâmetros</title>
27         <variablelist>
28             <varlistentry>
29                 <term>X</term>
30                 <listitem>
31                     <para>matriz simétrica, não-negativa definida de reais ou
32                         complexos
33                     </para>
34                 </listitem>
35             </varlistentry>
36         </variablelist>
37     </refsection>
38     <refsection>
39         <title>Descrição</title>
40         <para>
41             Retorna W tal que <literal>X=W*W'</literal> (usa SVD).
42         </para>
43     </refsection>
44     <refsection>
45         <title>Exemplos</title>
46         <programlisting role="example"><![CDATA[ 
47 X=rand(5,2)*rand(2,5);X=X*X';
48 W=sqroot(X)
49 norm(W*W'-X,1)
50 //
51 X=rand(5,2)+%i*rand(5,2);X=X*X';
52 W=sqroot(X)
53 norm(W*W'-X,1)
54  ]]></programlisting>
55     </refsection>
56     <refsection role="see also">
57         <title>Ver Também</title>
58         <simplelist type="inline">
59             <member>
60                 <link linkend="chol">chol</link>
61             </member>
62             <member>
63                 <link linkend="svd">svd</link>
64             </member>
65         </simplelist>
66     </refsection>
67 </refentry>