FG=,dd +(I)  1Courier New1Symbol New1Courier New1Courier NewTimesr NewTimesr New1Courier New1Courier New1Courier New1Courier NewQPTQPTQPTQPT?/ <```@@@?~~~~~ԱޱޱԱ޿޿ph (((Pdd{ d< p {2H?@2<@xh;@Ė 9\Yivp@???ڟɂeY@ht @~kD@)p= ף (\•~kD@@)p= ף@ (\•@033333??@^ߛOw?HzG???zqo I@cx@@?@ @@@?@@@@@@@@s̬hfffffs@̬@hfffff@@/2??h!@$$$@@@@@???T!U"D\"2"d "!R!$%%`%tt^2-u^2ux = t; y = t^2-u^2; z = uiTiT02??h!@$$$@?@P@????@ %mt?K!!"%#%$%%%&%%Y%!%R%<"% %(%tt^20x = t; y = t^2; z = 002??h!@$$$@?P??@???@ %mt?t$| } ~    S%<#d$!į$,$Xa$0-t^2tx = 0; y = -t^2; z = t42???$$$??@ ףp=PQGz@@ ףp=@PQ???? %mt?'%(%)%*%+%,%-%??@?@????@       p"##02.5^20(x,y,z) = (0,2.5^2,0)52???$$$}&-0;@ w@̴@ʾVPv@@333333@ʾ???? ,$-$.$/$0$1$2$b!Q#X#d"\#ı#`# 2.5cosh(t)2.5^2 2.5sinh(t)*x = 2.5cosh(t); y = 2.5^2; z = 2.5sinh(t)02??h!@$$$??VPv̴@ʾ/y>@333333@ʾ????     č Ȏ ̏ Դ#ԫ"@" #D""H" -2.5cosh(t)2.5^2 2.5sinh(t)+x = -2.5cosh(t); y = 2.5^2; z = 2.5sinh(t)02??h!@$$$??ʾ@333333/y>@ʾ?̴VPv@??? 5%6%7%9%:%;% <%|##"""" " 2.5sinh(t)-2.5^2 2.5cosh(t)+x = 2.5sinh(t); y = -2.5^2; z = 2.5cosh(t)02??h!@$$$??ʾ@333333VPvʾ?̴/y>??? 3$4$5$6$7$8$9$ "H"""P"tz#{# 2.5sinh(t)-2.5^2 -2.5cosh(t),x = 2.5sinh(t); y = -2.5^2; z = -2.5cosh(t)02??h!@$$$@?cFW1 Vf1fPv@P@zl????А ԑ ؒ ܓ    <!!#!4#@!!sqrt(t)cosh(.5)tsqrt(t)sinh(.5)0x = sqrt(t)cosh(.5); y = t; z = sqrt(t)sinh(.5)02??h!@$$$@?Pvf1fcFW1 V?P@zl????=%>%?%@% A%:$;$@&܀&|&t!<>">"@"-sqrt(t)cosh(.5)tsqrt(t)sinh(.5)1x = -sqrt(t)cosh(.5); y = t; z = sqrt(t)sinh(.5)02??h!@$$$@?PvzlcFW1 V?P@f1f????       0n&d$l&4 &&&-sqrt(t)cosh(-.5)tsqrt(t)sinh(-.5)3x = -sqrt(t)cosh(-.5); y = t; z = sqrt(t)sinh(-.5)02??h!@$$$@?cFW1 VzlPv@P@f1f????u$v$w$x$y$z${$'&&'&D&'sqrt(t)cosh(-.5)tsqrt(t)sinh(-.5)2x = sqrt(t)cosh(-.5); y = t; z = sqrt(t)sinh(-.5)02??h!@$$$@?f1fPcFW1 Vzl??Pv@???<$=$>$?$@$A$B$|'''(j'$''i'sqrt(t)sinh(.5)-tsqrt(t)cosh(.5)1x = sqrt(t)sinh(.5); y = -t; z = sqrt(t)cosh(.5)02??h!@$$$@?f1fPPvzl??cFW1 V????       ''(')'w'\*'*'w'sqrt(t)sinh(.5)-t-sqrt(t)cosh(.5)2x = sqrt(t)sinh(.5); y = -t; z = -sqrt(t)cosh(.5)02??h!@$$$@?zlPPvf1f??cFW1 V????|$}$~$$܀$$$Ȅ''''D''p'sqrt(t)sinh(-.5)-t-sqrt(t)cosh(-.5)4x = sqrt(t)sinh(-.5); y = -t; z = -sqrt(t)cosh(-.5)02??h!@$$$@?zlPcFW1 Vf1f??Pv@???C$D$E$G$H$I$ J$4('X'('l((sqrt(t)sinh(-.5)-tsqrt(t)cosh(-.5)3x = sqrt(t)sinh(-.5); y = -t; z = sqrt(t)cosh(-.5)42???$$$??ss@ @ @??? %mt?$ ( , 0 4 8 < (dp("( 2.5cosh(.5)2.5^2 2.5sinh(.5) 2.5sinh(.5)Hseg (2.5cosh(.5),2.5^2,2.5sinh(.5)) to (2.5sinh(.5),-2.5^2,2.5cosh(.5))-2.5^2 2.5cosh(.5)42???$$$??ss@ @ @??? %mt?$$$$$$$ps((( -2.5cosh(.5)2.5^2 2.5sinh(.5) -2.5sinh(.5)Jseg (-2.5cosh(.5),2.5^2,2.5sinh(.5)) to (-2.5sinh(.5),-2.5^2,2.5cosh(.5))-2.5^2 2.5cosh(.5)42???$$$??ss@ @ @??? %mt?K$L$M$N$ O$@ D 0'((ܘ( -2.5cosh(.5)2.5^2 -2.5sinh(.5) -2.5sinh(.5)Lseg (-2.5cosh(.5),2.5^2,-2.5sinh(.5)) to (-2.5sinh(.5),-2.5^2,-2.5cosh(.5))-2.5^2 -2.5cosh(.5)42???$$$??ss@ @ @??? %mt?$$ $$$$$w(<(( 2.5cosh(.5)2.5^2 -2.5sinh(.5) 2.5sinh(.5)Jseg (2.5cosh(.5),2.5^2,-2.5sinh(.5)) to (2.5sinh(.5),-2.5^2,-2.5cosh(.5))-2.5^2 -2.5cosh(.5)xyzJXT@@?@@@@@@@@@@@@@@@@@@@@@@@@@@@T2 @T2 @T2 @y = x^2 - z^2~ Ceڋ?~@W;:4@Times New Romanx = t; y = t^2-u^2; z = uz = u쵻Híncf@/R۝@1Courier New x = t; y = t^2; z = 0쵻HU~C@rPpJ2@1Courier Newp x = 0; y = -t^2; z = t  ! 쵻H@0񓼍pk^e&@1Courier New( seg (2.5,2.5^2,0) to (-2.5,2.5^2,0)쵻He0m@#wPǽuo2Lc0@1Courier New seg (0,-2.5^2,2.5) to (0,-2.5^2,-2.5)쵻He0m@#wPǽuЗs6C@1Courier New (x,y,z) = (0,2.5^2,0)쵻He0m@#wPǽuOle@1Courier NewP (x,y,z) = (0,-2.5^2,0)쵻Hmg@Z,ݔZ+%; @1Courier New x = 2.5cosh(t); y = 2.5^2; z = 2.5sinh(t)/쵻Hmg@Z,ݔB@1Courier New x = -2.5cosh(t); y = 2.5^2; z = 2.5sinh(t)/쵻Hmg@Z,ݔo 2{@1Courier Newx  x = 2.5sinh(t); y = -2.5^2; z = 2.5cosh(t)/쵻Hmg@Z,ݔmCf@1Courier New0  x = 2.5sinh(t); y = -2.5^2; z = -2.5cosh(t)/쵻Hmg@Z,ݔiy&*@1Courier New  x = sqrt(t)cosh(.5); y = t; z = sqrt(t)sinh(.5)```쵻HS@=r :}-MC?1Courier New  x = -sqrt(t)cosh(.5); y = t; z = sqrt(t)sinh(.5)00```쵻H_1q@.*AM/c Y6:+?1Courier NewX  x = -sqrt(t)cosh(-.5); y = t; z = sqrt(t)sinh(-.5)```쵻Hb>|@B <N2?1Courier New x = sqrt(t)cosh(-.5); y = t; z = sqrt(t)sinh(-.5)t"```쵻H1;z8@>} g/n ) ?1Courier NewbȺ x = sqrt(t)sinh(.5); y = -t; z = sqrt(t)cosh(.5)```쵻Hb>|@B>B?1Courier New x = sqrt(t)sinh(.5); y = -t; z = -sqrt(t)cosh(.5)쵻H>9@,fH$kʟ1޽?1Courier New8 x = sqrt(t)sinh(-.5); y = -t; z = -sqrt(t)cosh(-.5)@쵻H(b9?@z5X?1Courier New seg (2.5cosh(.5),2.5^2,2.5sinh(.5)) to (2.5sinh(.5),-2.5^2,2쵻H`9?@yaTW{1Courier New` seg (-2.5cosh(.5),2.5^2,2.5sinh(.5)) to (-2.5sinh(.5),-2.5^2쵻Hxխ@v%t0ʐ;1Courier New seg (-2.5cosh(.5),2.5^2,-2.5sinh(.5)) to (-2.5sinh(.5),-2.5^쵻H࿴@3pQp`h1Courier New]п seg (2.5cosh(.5),2.5^2,-2.5sinh(.5)) to (2.5sinh(.5),-2.5^2,쵻H࿴@3pQo51Courier New