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<TITLE>Identity matrix</TITLE>
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<P>
<font size="+3" color="green"><B>Identity matrix</B></font></P>
<P>
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<TD width="15%" valign="top"><B>Syntax</B>:</TD>
<TD width="85%"><CODE>
m = IDENTITY(n)</CODE>
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</table></p>
<p>
The function <CODE>IDENTITY(n)</code> returns the
identity matrix of order <CODE>n</code>, that is, the
<CODE>n</code> by <CODE>n</code>
matrix with ones on the diagonal and zeros elsewhere.</p>
<p>
<font size="+1" color="green">Example</font></P>
<p>
<code>IDENTITY(4)</code> returns the matrix <IMG ALIGN="middle" SRC="identityI01.png"></p>
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