                 |  ! !    |
                 |  ! !  x |
                 |  ! !   i|
                 | i = 1   |
                 \         /
</pre>
<p>Exemplo:
</p>
<pre class="example">(%i1) load (descriptive)$
(%i2) load (numericalio)$
(%i3) y : [5, 7, 2, 5, 9, 5, 6, 4, 9, 2, 4, 2, 5]$
(%i4) geometric_mean (y), numer;
(%o4)                   4.454845412337012
(%i5) s2 : read_matrix (file_search (&quot;wind.data&quot;))$
(%i6) geometric_mean (s2);
(%o6) [8.82476274347979, 9.22652604739361, 10.044267571