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<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:lang="en" xml:id="invr">
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<refname>invr</refname>
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<refpurpose> inversion of (rational) matrix</refpurpose>
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<title>Calling Sequence</title>
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<synopsis>F = invr(H)</synopsis>
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<title>Arguments</title>
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<para>polynomial or rational matrix</para>
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<para>polynomial or rational matrix</para>
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<title>Description</title>
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If <literal>H</literal> is a polynomial or rational function matrix, <literal>invr</literal>
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computes <literal>H^(-1)</literal> using Leverrier's algorithm (see function code)
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<title>Examples</title>
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<programlisting role="example"><![CDATA[
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<refname>invr</refname>
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<refpurpose> inversion of (rational) matrix</refpurpose>
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<title>Calling Sequence</title>
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<synopsis>F = invr(H)</synopsis>
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<title>Arguments</title>
28
<para>polynomial or rational matrix</para>
34
<para>polynomial or rational matrix</para>
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<title>Description</title>
42
If <literal>H</literal> is a polynomial or rational function matrix, <literal>invr</literal>
43
computes <literal>H^(-1)</literal> using Leverrier's algorithm (see function code)
47
<title>Examples</title>
48
<programlisting role="example"><![CDATA[
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H=[s,s*s+2;1-s,1+s]; invr(H)
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[Num,den]=coffg(H);Num/den
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H=[1/s,(s+1);1/(s+2),(s+3)/s];invr(H)
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]]></programlisting>
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<refsection role="see also">
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<title>See Also</title>
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<simplelist type="inline">
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<link linkend="glever">glever</link>
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<link linkend="coffg">coffg</link>
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<link linkend="inv">inv</link>
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<refsection role="see also">
56
<title>See Also</title>
57
<simplelist type="inline">
59
<link linkend="glever">glever</link>
62
<link linkend="coffg">coffg</link>
65
<link linkend="inv">inv</link>