I9Odd   1Courier NewSymbolxyx1Courier New1Courier NewTimes New RomanTimes New Romanxyx1Courier New1Courier New1Courier New1Courier NewtYPtYPtYPtYP }  d< Pp XUUUUU@XUUUUUXUUUUU@@`bw̫???@@@@@@033333??@@^ߛOw????_ }:@[[@@?@ @@@zWD[?@@2???$$$?????????ȴ̵жԷظܹດt̪3`lC@WY@ޟhfffff? `lC@WY@`_~@hfffff? 0J-'E½p#hfffff? 0J-'E½h^dUoӦ@hfffff? &k$)Hehfffff? &k$T?hfffff? &!?@+?w7юhfffff? &!?@+?>?hfffff? 1-(xx/a^2-yy/(a^2(k^2-1)))xx/a^2-yy/(a^2(k^2-1))=1rP2???$$$Q?????????Q?@DTX\`dXxUa*k0pi/4(x,y) = (a*k,0)2???$$$Q????????Q仔輔코ݔT-a*k0pi/4(x,y) = (-a*k,0)2???$$$8;?XUUUUU8;?XUUUUU@??????8;?XUUUUU@8;?XUUUUUhlptx|Xٓs10a/k(1)x + (0)y = a/k2???$$$8;XUUUUU8;XUUUUU@??????8;XUUUUU@8;XUUUUU8y dSt{y10-a/k(1)x + (0)y = -a/k2???$$$R`?h:a5?????????R`?h:a5? h$Tē acosh(p)a*sqrt(k^2-1)sinh(p)pi/4((x,y) = (acosh(p),a*sqrt(k^2-1)sinh(p))2???$$$Q?R`?h:a5???????PTX\` TTth acosh(p)a*sqrt(k^2-1)*sinh(p)a*k00seg (acosh(p),a*sqrt(k^2-1)*sinh(p)) to (a*k,0)2???$$$8;?h:a5?R`?h:a5???????`UUUUU? X|& a*cosh(p)a*sqrt(k^2-1)*sinh(p);a*cosh(p)-1/k*a*sqrt(sinh(p)*sinh(p)(k^2-1)+(cosh(p)-k)^2)a*sqrt(k^2-1)*sinh(p)|seg (a*cosh(p),a*sqrt(k^2-1)*sinh(p)) to (a*cosh(p)-1/k*a*sqrt(sinh(p)*sinh(p)(k^2-1)+(cosh(p)-k)^2),a*sqrt(k^2-1)*sinh(p))2???$$$QR`?h:a5???????ĻȼT*$bw x acosh(p)a*sqrt(k^2-1)*sinh(p)-a*k01seg (acosh(p),a*sqrt(k^2-1)*sinh(p)) to (-a*k,0)2???$$$H;h:a5?R`?h:a5???????`UUUUU?$ YZ[\^_PldD?+lO, a*cosh(p)a*sqrt(k^2-1)*sinh(p);a*cosh(p)-1/k*a*sqrt(sinh(p)*sinh(p)(k^2-1)+(cosh(p)+k)^2)a*sqrt(k^2-1)*sinh(p)|seg (a*cosh(p),a*sqrt(k^2-1)*sinh(p)) to (a*cosh(p)-1/k*a*sqrt(sinh(p)*sinh(p)(k^2-1)+(cosh(p)+k)^2),a*sqrt(k^2-1)*sinh(p))2???$$$R`h:a5?????????R`h:a5? KL䰜豜천Ĺ -acosh(p)a*sqrt(k^2-1)sinh(p)pi/4)(x,y) = (-acosh(p),a*sqrt(k^2-1)sinh(p))+2 2??@$$$XUUUUUXUUUUU@???????@?ߜ|Ȝh sqrt(k^2-1)xy = sqrt(k^2-1)xa*sqrt(k^2-1)*si2 2??@$$$XUUUUUXUUUUU@???????@?XP#-sqrt(k^2-1)xy = -sqrt(k^2-1)xh(p)xyz?hfffff?fffff@HXT@hfffff?h)5?>?`lC@WY@@@@@@@@@@@@@@@@@?@@@@@@@@@@    xx/a^2-yy/(a^2(k^2-1))=1.T@[ZHr2?(x,y) = (a*k,0).T@[Z0oT?H(x,y) = (-a*k,0).T@[Z(8 vp?(1)x + (0)y = a/k*-?$.T@[ZR?,*P|D(1)x + (0)y = -a/kU8.T@[ZG4?| *#p(x,y) = (acosh(p),a*sqrt(k^2-1)sinh(p)).T@[Z]ʵ-?(seg (acosh(p),a*sqrt(k^2-1)*sinh(p)) to (a*k,0).T@[Zh?,*P_[@?seg (a*cosh(p),a*sqrt(k^2-1)*sinh(p)) to (a*cosh(p)-1/k*a*sq.T@[Z8P@