lving the absolute value function,
apply <code>signum_to_abs</code>; thus
</p><table><tr><td>&nbsp;</td><td><pre class="example"> (%i3) signum_to_abs(%);
 (%o3) (x*abs(x))/2
</pre></td></tr></table>
<p>When the integrand has the form <em>p(x) |x - c1| |x - c2| ... |x - cn|</em>,
where <em>p(x)</em> is a polynomial and <em>c1, c2, ..., cn</em> are constants,
the <code>abs_integrate</code> package returns an antiderivative that is valid on the
entire real line; thus <i>without</i> making assumptions on <em>a<