[doc] comparisons page improved
[scilab.git] / scilab / modules / elementary_functions / help / fr_FR / trigonometry / acoshm.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <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="acoshm" xml:lang="fr">
3     <refnamediv>
4         <refname>acoshm</refname>
5         <refpurpose>cosinus hyperbolique matriciel inverse</refpurpose>
6     </refnamediv>
7     <refsynopsisdiv>
8         <title>Séquence d'appel</title>
9         <synopsis>t=acoshm(x)</synopsis>
10     </refsynopsisdiv>
11     <refsection>
12         <title>Paramètres</title>
13         <variablelist>
14             <varlistentry>
15                 <term>x,t</term>
16                 <listitem>
17                     <para>matrice carrée complexe ou réelle</para>
18                 </listitem>
19             </varlistentry>
20         </variablelist>
21     </refsection>
22     <refsection>
23         <title>Description</title>
24         <para>acoshm est le cosinus hyperbolique matriciel inverse de la matrice
25             x. Utilise la formule
26             <literal>t=logm(x+(x+eye())*sqrtm((x-eye())/(x+eye())))</literal> Pour les
27             matrices non symétriques le résultat peut être imprécis.
28         </para>
29     </refsection>
30     <refsection>
31         <title>Exemples</title>
32         <programlisting role="example"><![CDATA[
33 A=[1,2;3,4];
34 coshm(acoshm(A))
35 A(1,1)=A(1,1)+%i;
36 coshm(acoshm(A))
37  ]]></programlisting>
38     </refsection>
39     <refsection role="see also">
40         <title>Voir aussi</title>
41         <simplelist type="inline">
42             <member>
43                 <link linkend="acosh">acosh</link>
44             </member>
45             <member>
46                 <link linkend="logm">logm</link>
47             </member>
48             <member>
49                 <link linkend="sqrtm">sqrtm</link>
50             </member>
51         </simplelist>
52     </refsection>
53 </refentry>