d(functs)</code>.
</p></dd></dl>

<dl>
<dt><u>Fun&ccedil;&atilde;o:</u> <b>harmonic</b><i> (<var>a</var>, <var>b</var>, <var>c</var>, <var>n</var>)</i>
<a name="IDX2001"></a>
</dt>
<dd><p>Retorna o <var>n</var>-&eacute;simo termo da s&eacute;rie harm&ocirc;nica
<code><var>a</var>/<var>b</var>, <var>a</var>/(<var>b</var> + <var>c</var>), <var>a</var>/(<var>b</var> + 2*<var>c</var>), ..., <var>a</var>/(<var>b</var> + (<var>n</var> - 1)*<var>c</var>)</code>.
</p>
<p>Para usar essa fun&ccedil;&atilde;o escreva 