 implements the transformation
<code>julia_parameter+z^2</code>, function <code>julia_sin</code> implements
<code>julia_parameter*sin(z)</code>. See source code for more details.
</p>
<p>This program runs slowly because it calculates a lot of sines.
</p>
<p>Example:
</p>
<p>This program is time consuming because it must make a lot of operations; 
the computing time is also related with the number of grid points.
</p>
<pre class="example">(%i1) load(fractals)$
(%i2) julia_parameter:1+.1*%i$
(%i3) plot3d (jul