reference/math/functions/cosh.xml
e049a733379781df3440b92fd41c12fe3f8e3b93
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>float</type><methodname>cosh</methodname>
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<methodparam><type>float</type><parameter>arg</parameter></methodparam>
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</methodsynopsis>
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<methodsynopsis>
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<type>float</type><methodname>cosh</methodname>
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<methodparam><type>float</type><parameter>num</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the hyperbolic cosine of <parameter>arg</parameter>,
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defined as <literal>(exp(arg) + exp(-arg))/2</literal>.
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Returns the hyperbolic cosine of <parameter>num</parameter>,
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defined as <literal>(exp($num) + exp(-$num))/2</literal>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>arg</parameter></term>
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<term><parameter>num</parameter></term>
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<listitem>
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<para>
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The argument to process
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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The hyperbolic cosine of <parameter>arg</parameter>
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The hyperbolic cosine of <parameter>num</parameter>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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<member><function>cos</function></member>
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<member><function>acosh</function></member>
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<member><function>sinh</function></member>
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<member><function>cosh</function></member>
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<member><function>tanh</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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