              n-1  /       i
                   ====
                   i = 1
</pre>

<p>Ejemplo:
</p>
<pre class="example">(%i1) load (descriptive)$
(%i2) s1 : read_list (file_search (&quot;pidigits.data&quot;))$
(%i3) var1 (s1), numer;
(%o3)                    8.5110101010101
(%i4) s2 : read_matrix (file_search (&quot;wind.data&quot;))$
(%i5) var1 (s2);
(%o5) [17.39586540404041, 15.13912778787879, 15.63204924242424, 
                            32.50152569696971, 24.66977392929294]
</pre>
<p>Véase tambi�