os coeficientes para as
vari&aacute;veis <var>x_1</var>, ..., <var>x_n</var> do sistema de equa&ccedil;&otilde;es lineares
<var>eqn_1</var>, ..., <var>eqn_m</var>.
</p>
<pre class="example">(%i1) coefmatrix([2*x-(a-1)*y+5*b = 0, b*y+a*x = 3], [x,y]);
                                 [ 2  1 - a ]
(%o1)                            [          ]
                                 [ a    b   ]
</pre>
</dd></dl>

<dl>
<dt><u>Fun&ccedil;&atilde;o:</u> <b>col</b><i> (<var>M</var>, <var>i</var>)</i>
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