20k [ 0lx-sx 1sw]s0 [lx 2/sxly 1+sylx 2<1]s1 [lglg*sglyd1-sy 0!=4]s4 [ 1lg/Lxs.Las.Lbs.Lcs.Lds.Les.Lgs.Lts.Lws.Lys. 4Q]s5 [lg 1/sglyd1-sy 0!=4 ltklw 1=5 lg 1/Lxs.Las.Lbs.Lcs.Lds.Les.Lgs.Lts.Lws.Lys. 3Q]s3 [lblx*sblcla*lb+scldla*sdlcld/sglgle=3 lgselad1+sas. 1 1=2]s2 [0Sy0Sw0St0Sg0Se0Sd0Sc0Sb0SaSxKstlt .434lx*+ 1+k 0swlx 0>0 0sylx 2<1 1sa 1sblbsc 1sd 1se 1dsas. 1 1=2 Lxs.Las.Lbs.Lcs.Lds.Les.Lgs.Lts.Lws.Lys.0 1Q]s [ 1 10K^-Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lus.Lss.Lts. 2Q]s6 [lsk]s8 [lslxZlxX- 2/+ 1+ssls 0<8 lxvsxlf 2*sflx 2<7]s7 [lsk]s: [lslxZlxX- 2/+ 1+ssls 0<: lxvsxlf 2*sflx .5>9]s9 [ltklulc*ld/Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lus.Lss.Lts. 3Q]s< [lbls*sblcla*ldlb*+scldla*sdlcld/sglgle=< lgsela 2+dsas. 1 1=;]s; [0St0Ss0Su0Sg0Sf0Se0Sd0Sc0Sb0SaSxlx 0!<6 Kst 1sfKlxX+lxZ- 1+kKsslx 2<7 lx .5>9 ltlfZ+lfX- 1+klx 1-lx 1+/suK 1.1ltZ*+ 1.1ltX*-klulu*ss 2lf*sblbsc 1sd 1se 3dsas. 1 1=; Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lus.Lss.Lts.0 1Q]s [ltss]s= [lx 2lp*/ 1+ 2/sn]s> [lx 2lp*/ 1- 2/sn]s? [ 0lx-sx]s@ [ltkls 1/Lxs.Las.Lbs.Lcs.Lss.Lts.Lys.Lps.Lns.Lis. 3Q]sB [laly*salbli*li 1-*sblalb/sclc 0=B lslc+ssli 2+dsis. 1 1=A]sA [0Si0Sn0Sp0Sy0St0Ss0Sc0Sb0SaSxKstlx .7853/syltlyZ+lyX-sslslt>= lsk 1lxsp 0klx 0!>> lx 0>? lx 4ln*lp*-sxln 2% 0!=@ lt 1.2lt*Z+ 1.2lt*X-k 0lx-lx*sylxsa 1sblxss 3dsis. 1 1=A Lxs.Las.Lbs.Lcs.Lss.Lts.Lys.Lps.Lns.Lis.0 1Q]s [0StSxKstK 1+klx 2 1lx*+lxsxltklx 1/Lxs.Lts. 1QLxs.Lts.0 1Q]s [ 0Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lss.Lts. 2Q]sC [ .7853981633974483096156608458198757210492923498437764 1/Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lss.Lts. 3Q]sE [K 52>E ]sD [K 1+k 0 1 1.lxlx*+v--lx/sxlf 2*sflx .5G]sG [ltklxlc*ld/Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lss.Lts. 3Q]sI [lbls*sblcla*ldlb*+scldla*sdlcld/sglgle=I lgsela 2+dsas. 1 1=H]sH [0St0Ss0Sg0Sf0Se0Sd0Sc0Sb0SaSxlx 0=C lx 1=D Kst 1sflx .5G 0lx-lx*sslfsblfsc 1sd 1se 3dsas. 1 1=H Lxs.Las.Lbs.Lcs.Lds.Les.Lfs.Lgs.Lss.Lts.0 1Q]s [Klk+k]sJ [ 0ln-sn 0lx-sx]sK [lalx*salc 2*li*sclid1+sis.liln!K 1sa 1sc 1dsis.liln!