5000,10);
(%o2)                3703.970670389863
</pre></dd></dl>

<dl>
<dt><u>Function:</u> <b>geo_annuity_pv</b><i> (<var>rate</var>, <var>growing_rate</var>, <var>PV</var>, <var>num</var>)</i>
<a name="IDX2161"></a>
</dt>
<dd><p>We can calculate the annuity knowing the present value (like an ammount),
in a growing periodic payment.  <var>rate</var> is the interest rate,
<var>growing_rate</var> is the growing rate, <var>PV</var> is the present value and
<var>num</var> is the number of periods.
</p>
<p>Exa