* Bug 15891 fixed: [doc] matrix-wise trigo pages => subsection
[scilab.git] / scilab / modules / elementary_functions / help / ru_RU / trigonometry / matrix_wise / cosm.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!--
3  * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
4  * Copyright (C) 2008 - INRIA
5  *
6  * Copyright (C) 2012 - 2016 - Scilab Enterprises
7  *
8  * This file is hereby licensed under the terms of the GNU GPL v2.0,
9  * pursuant to article 5.3.4 of the CeCILL v.2.1.
10  * This file was originally licensed under the terms of the CeCILL v2.1,
11  * and continues to be available under such terms.
12  * For more information, see the COPYING file which you should have received
13  * along with this program.
14  *
15  -->
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:ns5="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="cosm" xml:lang="ru">
17     <refnamediv>
18         <refname>cosm</refname>
19         <refpurpose>matrix cosine function</refpurpose>
20     </refnamediv>
21     <refsynopsisdiv>
22         <title>Синтаксис</title>
23         <synopsis>t = cosm(x)</synopsis>
24     </refsynopsisdiv>
25     <refsection>
26         <title>Аргументы</title>
27         <variablelist>
28             <varlistentry>
29                 <term>x</term>
30                 <listitem>
31                     <para>вещественная или комплексная квадратная матрица.</para>
32                 </listitem>
33             </varlistentry>
34         </variablelist>
35     </refsection>
36     <refsection>
37         <title>Описание</title>
38         <para>
39             <code>cosm(x)</code> является матричным косинусом матрицы <varname>x</varname>.
40             <code>t=0.5*(expm(%i*x)+expm(-%i*x))</code>.
41         </para>
42     </refsection>
43     <refsection>
44         <title>Примеры</title>
45         <programlisting role="example"><![CDATA[
46 A=[1,2;3,4]
47 cosm(A)-0.5*(expm(%i*A)+expm(-%i*A))
48  ]]></programlisting>
49     </refsection>
50     <refsection role="see also">
51         <title>Смотрите также</title>
52         <simplelist type="inline">
53             <member>
54                 <link linkend="cos">cos</link>
55             </member>
56             <member>
57                 <link linkend="expm">expm</link>
58             </member>
59         </simplelist>
60     </refsection>
61 </refentry>