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<HTML>
<HEAD>
<TITLE>Exponential integrals</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF" fgcolor="#000000">
<P>
<font size="+3" color="green"><B>Exponential integrals</B></font></P>
<P>
<TABLE border="1" cols="2" frame="box" rules="all" width="572">
<TR>
<TD width="15%" valign="top"><B>Syntax</B>:</TD>
<TD width="85%"><CODE>
y = EXPINT(x)<br />
y = EI(x)<br />
y = EXPN(x,n)</code>
</TD></TR>
</table></p>
<p>
<img src="expint1.png"></p>
<p>
<img src="expint2.png"></p>
<p>
<img src="expint3.png"></p>
<p>
where <img src="expint4.png"> and
<img src="expint5.png">
<P>
<a href="../EllipticIntegrals/ellipticintegrals.htm">
<img align="top" border="0" src="../../../shadow_left.gif">
<font size="+1" color="olive">Elliptic integrals</font></a><br />
<a href="../FermiDirac/ferdirac.htm"><img align="top" border="0" src="../../../shadow_right.gif">
<font size="+1" color="olive">Fermi-Dirac distribution</font></a>
</P>
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</HTML>
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