%i1) load(finance)$
(%i2) pv(0.12,1000,3);
(%o2)                711.7802478134108
</pre></dd></dl>

<dl>
<dt><u>Function:</u> <b>graph_flow</b><i> (<var>val</var>)</i>
<a name="IDX2158"></a>
</dt>
<dd><p>Plots the money flow in a time line, the positive values are in blue
and upside; the negative ones are in red and downside.
The direction of the flow is given by the sign of the value.
<var>val</var> is a list of flow values.
</p>
<p>Example:
</p>
<pre class="example">(%i1) load(finance)$
(%i2) graph_flow([