**TI92P*mainCabriFigure file 09/21/05, 09:49Rorthohyp—¥Z=~ÿã NobA!ÿß PSÿãNobB>ÿî PS:ÿÀPNobF  PSÿ@ ™™™™™™™EQQÿEQ1ÿ?ÿrA7“4H$ÿTE$$N x=,)FO3(ÿ@€•#€•$ÿ3( 1/aTE ((4 1/x=NobKÿöÿÙ REŠª PE PENobCÿÓ PIˆ LIÀ KSEOÿSESE˜PEPENobHÿñ$ PIÿáhF