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<HTML>
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<TITLE>Indices on expressions</TITLE>
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<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<P><A NAME="indexonexpression"></A>
<font size="+2" color="green">Indices on expressions</font></P>
<P>
Indices can be used on an expression. For example, if <code>x</code> and
<code>y</code> are vectors of length <CODE>10</CODE>, then
<code>(x+y)</code> is also a vector of length <CODE>10</CODE>,
and an index can be used, such as <code>(x+y)[3]</code>.</p>
<p>
The special index characters <CODE>#</CODE> and <CODE>*</CODE> <em>cannot</em> be used in indices on
expressions.</P>
<P>
<a href="indexonfunction.htm"><img src="../shadow_left.gif">
<font size="+1" color="olive">Indices on functions</font></a><br />
<a href="indexasexpression.htm"><img src="../shadow_right.gif">
<font size="+1" color="olive">Index as an expression</font></a>
</P>
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