I7#=Odd +(I)   1Courier NewTimes New Romanxyx1Courier New1Courier NewTimes New RomanTimes New Romanxyx1Courier New1Courier New1Courier New1Courier NewX6VX6VX6VX6V?/ <```@@@?~~~~~ԱޱޱԱ޿޿ph (((Pdd }  d< Pp {2 @@UiiUii@0X???@@@@@@033333??@@^ߛOw????:8Ic@ V@@@?@ @@@??@?@?@@dddddddddddddddddddddddddddddddddddddddd 2???$$$????????/ =?\ \!\"\#\==p=?X&(&v!q@MyhIՑ@ (W1-(xx/a^2+yy/(a^2(1-k^2)))xx/a^2+yy/(a^2(1-k^2))=1rP2???$$$LzG?????????LzG?>>>>>>> *&a*k0pi/4(x,y) = (a*k,0)2???$$$LzG????????LzG=======?d&-a*k0pi/4(x,y) = (-a*k,0)2???$$$@,(d@,(d@??????@,(d@@,(d >!>">#>$>%>&>*&?*,*10a/k(1)x + (0)y = a/k2???$$$,(d,(d@??????,(d@,(d=======<&*&;d;10-a/k(1)x + (0)y = -a/k2???$$$+.Dͷ_\?????????+.Dͷ_\? '>(>*>+>,> ->.> *P*acos(p)a*sqrt(1-k^2)sin(p)pi/4&(x,y) = (acos(p),a*sqrt(1-k^2)sin(p))2???$$$+.Dͷ_LzG?\???????4585<5@5D5H5L5;!*&T?)*v+acos(p)a*sqrt(1-k^2)*sin(p)a*k0.seg (acos(p),a*sqrt(1-k^2)*sin(p)) to (a*k,0)2???$$$+.Dͷ_\?@\??????? ȝ$̞$П$Ԡ$ء$ܢ$$4**?p;??? a*cos(p)a*sqrt(1-k^2)*sin(p)7a*cos(p)+1/k*a*sqrt(sin(p)*sin(p)(1-k^2)+(cos(p)-k)^2)a*sqrt(1-k^2)*sin(p)useg (a*cos(p),a*sqrt(1-k^2)*sin(p)) to (a*cos(p)+1/k*a*sqrt(sin(p)*sin(p)(1-k^2)+(cos(p)-k)^2),a*sqrt(1-k^2)*sin(p))2???$$$LzG*.Dͷ_\???????@)D)H)L)P*T*X*X?@R*@ @?acos(p)a*sqrt(1-k^2)*sin(p)-a*k0/seg (acos(p),a*sqrt(1-k^2)*sin(p)) to (-a*k,0)2???$$$\?,.Dͷ_\???????k;l;m;n;o;p;$ @(x3@p=@LN@t>@ a*cos(p)a*sqrt(1-k^2)*sin(p)7a*cos(p)-1/k*a*sqrt(sin(p)*sin(p)(1-k^2)+(cos(p)+k)^2)a*sqrt(1-k^2)*sin(p)useg (a*cos(p),a*sqrt(1-k^2)*sin(p)) to (a*cos(p)-1/k*a*sqrt(sin(p)*sin(p)(1-k^2)+(cos(p)+k)^2),a*sqrt(1-k^2)*sin(p))xyž@`X)\?HXT@?@v!q@M@@@@@@@@@@@?@@@@h!@@@@@@@@@@@RW$RW$RW$ xx/a^2+yy/(a^2(1-k^2))=1E~@[ZHw@1Courier New ~?(x,y) = (a*k,0)E~@[Z#a@1Courier New \?(x,y) = (-a*k,0)E~@[Zw@1Courier New ?(1)x + (0)y = a/k*-?$E~@[ZaX?1Courier New ̀?(1)x + (0)y = -a/kU8E~@[Zn#wut?1Courier New ?(x,y) = (acos(p),a*sqrt(1-k^2)sin(p))E~@[Z{]8?1Courier New