(b + a)      0         0     ]
                [                              ]
(%o3)           [                  4           ]
                [    0      (b + a)      0     ]
                [                              ]
                [                            5 ]
                [    0         0      (b + a)  ]
</pre>
</dd></dl>

<dl>
<dt><u>Fun&ccedil;&atilde;o:</u> <b>genmatrix</b><i> (<var>a</var>, <var>i_2</var>, <var>j_2</var>, <var>i_1</var>, <var>j_1</var>)</i>
<a name="IDX791"></a>
</dt>