Massive indent of all codes:
[scilab.git] / scilab / modules / linear_algebra / help / pt_BR / matrix / det.xml
1     <?xml version="1.0" encoding="ISO-8859-1"?>
2     <!--
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12  -->
13     <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="det" xml:lang="en">
14         <refnamediv>
15             <refname>det</refname>
16             <refpurpose>determinante</refpurpose>
17         </refnamediv>
18         <refsynopsisdiv>
19             <title>Seqüência de Chamamento</title>
20             <synopsis>det(X)
21                 [e,m]=det(X)
22             </synopsis>
23         </refsynopsisdiv>
24         <refsection>
25             <title>Parâmetros</title>
26             <variablelist>
27                 <varlistentry>
28                     <term>X</term>
29                     <listitem>
30                         <para>matriz quadrada de reais ou complexos, matriz de polinômios ou
31                             de razões de polinômios
32                         </para>
33                     </listitem>
34                 </varlistentry>
35                 <varlistentry>
36                     <term>m</term>
37                     <listitem>
38                         <para>número real ou complexo, a mantissa de base 10 do
39                             determinante
40                         </para>
41                     </listitem>
42                 </varlistentry>
43                 <varlistentry>
44                     <term>e</term>
45                     <listitem>
46                         <para>inteiro, o expoente de base 10 do determinante</para>
47                     </listitem>
48                 </varlistentry>
49             </variablelist>
50         </refsection>
51         <refsection>
52             <title>Descrição</title>
53             <para>
54                 <literal>det(X)</literal> ( <literal>m*10^e</literal> é o
55                 determinante da matriz quadrada <literal>X)</literal>.
56             </para>
57             <para>
58                 Para uma matriz de polinômios, <literal>det(X)</literal> é
59                 equivalente a <literal>determ(X)</literal>.
60             </para>
61             <para>
62                 Para matrizes de razões de polinômios <literal>det(X)</literal> é
63                 equivalente a <literal>detr(X)</literal>.
64             </para>
65         </refsection>
66         <refsection>
67             <title>Referências</title>
68             <para>As computações da função det são baseadas nas rotinas do LAPACK
69                 DGETRF para matrizes de reais e ZGETRF para o caso de matrizes de
70                 complexos.
71             </para>
72         </refsection>
73         <refsection>
74             <title>Exemplos</title>
75             <programlisting role="example"><![CDATA[ 
76 x=poly(0,'x');
77 det([x,1+x;2-x,x^2])
78 w=ssrand(2,2,4);roots(det(systmat(w))),trzeros(w)   //zeros do sistema linear
79 A=rand(3,3);
80 det(A), prod(spec(A))
81  ]]></programlisting>
82         </refsection>
83         <refsection>
84             <title> Ver Também</title>
85             <simplelist type="inline">
86                 <member>
87                     <link linkend="detr">detr</link>
88                 </member>
89                 <member>
90                     <link linkend="determ">determ</link>
91                 </member>
92             </simplelist>
93         </refsection>
94     </refentry>