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<DIV><FONT face=Arial size=4>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=4> </FONT></DIV>
<DIV><FONT face=Arial size=4>In my opinion, the alpha should be (K2-K1)/6
instead of (K1-K2)/6 because the alpha should be
negative.</FONT></DIV></BODY></HTML>