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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2009 - DIGITEO - Vincent COUVERT
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
-->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:id="acoth">
<refnamediv>
<refname>acoth</refname>
<refpurpose>(Matlab function) Inverse hyperbolic cotangent</refpurpose>
</refnamediv>
<refsection>
<title>Matlab/Scilab equivalent</title>
<para>
<informaltable border="1" pgwide="1">
<tr>
<td align="center">
<emphasis role="bold">Matlab</emphasis>
</td>
<td align="center">
<emphasis role="bold">Scilab</emphasis>
</td>
</tr>
<tr>
<td>
<programlisting role="example"><![CDATA[
acoth(A)
]]></programlisting>
</td>
<td>
<programlisting role="example"><![CDATA[
atanh(1 ./A)
]]></programlisting>
</td>
</tr>
</informaltable>
</para>
</refsection>
<refsection>
<title>Particular cases</title>
<para>In Matlab <emphasis role="bold">y=acoth(x)</emphasis> and Scilab <emphasis role="bold">y=atanh(1 ./x)</emphasis>, for real elements of <emphasis role="bold">x</emphasis> outside the domain <emphasis role="bold">[-1,1]</emphasis>, the complex part of Scilab <emphasis role="bold">y</emphasis> value is the opposite of Matlab <emphasis role="bold">y</emphasis> value. See <emphasis role="bold">atanh</emphasis>/.</para>
</refsection>
</refentry>
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