h}"></TD>
<TD WIDTH=10 ALIGN="RIGHT">
(2.6)</TD></TR>
</TABLE>
<BR CLEAR="ALL"></DIV><P></P>
where we need to assign <!-- MATH
 $v_1 = x_{29}, v_2 =  x_3$
 -->
<IMG
 WIDTH="117" HEIGHT="11" ALIGN="MIDDLE" BORDER="0"
 SRC="img42.png"
 ALT="$v_1 = x_{29}, v_2 = x_3$"> and <IMG
 WIDTH="58" HEIGHT="11" ALIGN="MIDDLE" BORDER="0"
 SRC="img43.png"
 ALT="$v_3 = x_{17}$">.
For this example, there are three elemental variables.

<P>
The example may be used to illustrate a  further point. Although <IMG
 WIDTH="14" HEI