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<a accesskey="3" href="page.php?w=Companion_matrix&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=linear_algebra">linear algebra</a>, the  <a href="page.php?w=Ferdinand_Georg_Frobenius">Frobenius</a>  <b>companion matrix</b> of the <a href="page.php?w=monic_polynomial">monic polynomial</a></p>

<p>is the <a href="page.php?w=square_matrix">square matrix</a> defined as</p>

<p>Some authors use the <a href="page.php?w=transpose">transpose</a> of this matrix, , which is more convenient for some purposes such as linear <a href="page.php?w=recurrence_relation">recurrence relation</a>s (see below).</p>

<p> is defined from</p><p>
<a accesskey="3" href="page.php?w=Companion_matrix&amp;p=2">3.Next</a>
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