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<h4 class="subsection">D.17.2 <code>umf</code> output</h4>

<p>If no exception occurs, the solution <var>x</var> to the matrix equation
<var>M</var> <var>x</var> = <var>b</var> noted previously will be returned if one
exists.

   <p>The solution is represented as either a list of real numbers as in
<a href="math.html#math">math</a>, or a list of complex numbers as in <a href="complex.html#complex">complex</a>. Real
numbers are returned by the <code>di_</code>* functions, and complex numbers
are returned by the <code>zi_</code>* functions.

   <p>If no solution exists due to a singular matrix, an empty list is
returned. The lack of a solution isn't treated as an exceptional
condition.

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