<b>Matriz.</b> (nombre: <span class="tt">matrix</span>)<br>
Como para las respuestas vectoriales, cada coeficiente es evaluado y comparado
con el coeficiente correspondiente de la respuesta correcta.
<p>
Three option words are available:
<span class="tt wims_code_words">split_coeff</span>,
<span class="tt wims_code_words">split_row</span>,
<span class="tt wims_code_words">split_column</span>.
The answer is partially good if a percentage (50 %) of good coefficients
or rows or columns is correct.
</p><p>
If <span class="tt wims_code_words">n</span> is the number of the question,
the variables <span class="tt wims_code_words">result</span>n contains
a matrix with 1 and 0 according to the position of the good and bad
coefficients (or 0.5 if the precision is not sufficient).
</p>