p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;z

</pre>
Maxima can obtain exact solutions to systems of nonlinear algebraic
equations.  In this example we <tt>solve</tt> three equations in the
three unknowns <tt>a</tt>, <tt>b</tt>, <tt>c</tt>:

<pre>
(%i6)&nbsp;a&nbsp;+&nbsp;b*c&nbsp;=&nbsp;1;
(%o6)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b&nbsp;c&nbsp;+&nbsp;a&nbsp;=&nbsp;1
(%i7)&nbsp;b&nbsp;-&n