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M2,ᯖN2OᑣcTb~EFḄPQRS&,Ay-±V2xBy-+2xCy=±-^-xDy=±^xூ"ᫀ௃Cூ᪆௃ᵫ\]8ᑮᓃ=l,c=J5,a=Jc2—஻=ᖾ,%EFḄᯖᙠx
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1317.(2009ᓅᔁᳮ)\]EFJIJ=1Ḅᙊ+=1Ḅᯖᑣ22y=+2ᙊᨵIḄᐙ⌕ᩩ]_]_A.KeB.Ke252D.Keூ"ᫀ௃Aூ᪆௃᧕8RSᡠ°2=/I஺2=4Iᓃ2=1ᓽ/=3ᡠRSe+=1ὶy=fcv+2783x2+(4k?+16k)x+4=0ᵫA4O78A2218.(2009¤¥ᔁᦻ)\]EF¦=13>0)Ḅ§ஹᯖᑖªᱏஹF,ᐸI2ᩩPQRS¬=P(g,y0)ᙠEFeᑣᡠ•ᡠ=A.-12B.-2C.0D.4ூ"ᫀ௃Cூ᪆௃ᵫPQRSy=x]EF°
EF.♦.EFRS=2,±ᯖᙶ᪗ᑖª(-2,0)t(2,0),;P(´,1)ᡈP(¶1).·¸¹P(º,1),ᑣ»=(-2-O,-1),6=(2-6,-1).•.»•?=(-2-V3-1)(2-V3,-1)=_(2+73)(2-½+1=019.(2009ᐰ¿ᔁHᳮ)\]y=MÂ+2)Ãு0)ÅᱥC$y2=8xÇAஹB@È஺ḄᯖIE4I=2IEBI,ᑣ᝕=1622cA.-B.---C.-D.----3333$DÅᱥC$y2=8xḄ/:x=—2y=Mx+2)(k>0)ឤgP(—2,0).

14᝞ÎAஹ8ᑖªÏAMJJM,BNJJN,ᵫIE41=21EBI,ᑣIAM1=21BNI,BAPḄÐ.ÑÒ஺8,ᑣI஺81='IAFI,r.lOBITBEIBḄ2Óᙶ᪗1,ᦑ8Ḅᙶ᪗crr.2^2—02-\/2...(1,2y]2)k=-----------=-----,ᦑ⌱D1-(-2)320.2009ᐰ¿ᔁHᳮ,\]EFC$—/=1஺>0/>0,ḄᯖÈF;Ô᳛——1ߟ-5ߟ■6Õ•.•4F=4FB.•.—.31ÖBI=-IFBk.e=-ᦑ⌱Ae25

1521.(2009ᓭᔁᦻ)Åᱥy=-8xḄᯖᙶ᪗[B]A.(2,0)B.(-2,0)C.(4,0)D.(-4,0)$ᵫV=—8x᧕]ᯖᙶ᪗§0)=(-2,0),ᦑ⌱B.22.(2009ÛÜᔁᦻ)\]ᙊCx-y=0Ýx-y—4=0ÞÇᑗᙊᙠx+y=0eᑣᙊCḄRS(A)(x+l)2+(y-l)2=2(B)(x-l)2+(y+l)2=2(0(Â-Ip+(y-1-=2(D)(x+l)2+(y+l)2=2ூ᪆௃ᙊᙠx+y=0e᣸◀CஹD,-ÒᔠÎäᡈὅæçAஹBÐᙊᑮ±ḄN°èéஹêᓽ7.ூ"ᫀ௃B2223.(2009Üëìᓭᔁᳮ)EFí-^=1ḄᯖᑮPQḄN412(A)243(B)2(C)6(D)1V2V2L|V3X4-0|L᪆$EFJ-±=1Ḅᯖ(4,0)ᑮPQî=ïḄN--------'-=2C⌱4122A24.(2009Üëìᓭᔁᳮ)D\]ÅᱥCḄ⚔ᙠᙶ᪗ñᯖF(l,0),1ÅᱥCÇA,B±஺ABḄÐ(2,2),ᑣ/ḄRS.᪆$ÅᱥḄRSy2=4x,(y2—4(X,ô),8(R,}),ᑣᨵ*ö2÷øI±ùÇú8ûIy=4(üI஽),ø.þÿ=
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16ᫀ:D.=᪆y=6x,ᙊḄ᪗@/+(y-2B=4,ᙊC(0,2)ᑮḄEF|V3x0-2|ᵫᚖLMᳮOᡠP45d*=2322-12=2ᵫᦑ⌱D.7(V3)2+(-l)226.(2009▷ᔁᦻ)“V>஻>0”Z“V[2+\2=1”⊤^ᯖ#ᙠyabḄcᙊ”Ḅ(A)ᐙᑖfgh⌕ᩩk(B)h⌕fgᐙᑖᩩk(C)ᐙ⌕ᩩk(D)lgᐙᑖmgh⌕ᩩkᫀ:C.=᪆:nVY+஻y2=lpᓄf+f=1,᪷tcᙊḄMu0⌕vᯖ#ᙠyabhwmnxyு0,—ு0,ᡠ{>—ᦑ⌱C.mnnm27.(2009|}ᔁᦻ)~Oߟ=13>0)Ḅஹᯖ#ᑖZ6ஹF,ᐸ2ᩩ=0#P(g,y0)ᙠbᑣ•=A.-12B.-2C.0D.4ூᫀ௃Cூ᪆௃ᵫy=xOZa0.♦.Z=2,Zᯖ#ᙶ᪗ᑖZ(-2,0)(2,0),$P(,1)ᡈP(1).gP(,1),ᑣ=(-2-,-1),f=(2-6,-1).•.•?=(-2-V3-1)(2-V3-1)=-(2+73)(2-+1=02228.(2009ᐰᔁIᦻ)¡*■#■=l(a>0,b>0)Ḅ¥ᱥy=x?+l¨ᑗ0ᑣªḄFC᳛(A)V3(B)2(C)V5(D)V6ூ᪆௃¬⚪ὃ°Ḅஹᙊ┵Ḅ²³ᐵµஹḄFC᳛,

17¶Ạ⚪஺=ᵫ⚪,%=1(஺>0,b>0)Ḅ•ᩩy=B0¹ᐭ¥ᱥ᦮ᳮ3ax?h+஺=0,¼¥ᱥ¨ᑗ0ᡠ{½42=o,ᓽac1=5a2=e=A/5,ᦑ⌱¾C«29.(2009ᐰᔁIᦻ)~OcᙊC:'+)2=1Ḅᯖ#E@/,#Ae/,ÂAFÄC#B஺Åᡂ=3f0ᑣ|⊟È(A)V2(B)2(C)V3(D)3ூ=᪆௃¬⚪ὃ°cᙊḄ@ஹᔣÌḄÍᵨஹcᙊḄMu0¶Ạ⚪஺=:!#BÏM,С@/XaḄÄ#N,᧕OFN=1.ᵫ⚪Ô=3f0ᦑ18Ml=—.ÖᵫcᙊḄ×ØMu03I1=-——=—ÙAF1=J5.ᦑ⌱A323330.(2009Ûᓅᔁᦻ)~OÝ■-/■=1Ḅ@Þ!cᙊᐲ+W=1(b>0)Ḅᯖ#0ᑣ224b2b=A.3B.áC.V3D.V2ூᫀ௃C2_______ூ=᪆௃â3Ḅ@x=±—=±1,Ö¼cᙊᯖ#(±"^æ,0)ᡠ{ᨵC,4-6=1.ᓽb2=3ᦑb=6.ᦑC.31.(2009ᜩéᔁᳮ)¡¥ᱥy2=2xḄᯖ#E!#M(00)Ḅ¥ᱥ¨ÄA,B#0¥ᱥḄ@¨ÄC,ëì=2,ᑣABCFAACFḄ☢îïð◖ò=SMCFஹ4ஹ241(A)-(B)-(C)-(D)-5372ூὃ#M²௃¬⚪ὃ°¥ᱥḄឋôஹõ#ᐳḄᙶ᪗ᐵµ0÷ᔠÍùᦪûḄüý0þ᫏⚪஺

18᪆ᵫ⚪"==SᡊCFA஺X.+,1-2XA+1A42τ3IBF\=x+—=2=>x=—=>y=—V3/i/iB0_0+V3ᵫAஹB,Mᐳᨵ-M_PA=y”ߟ/Bᓽ1=---=---ᦑ=2,XM-XAXM~XB^~XAV3-32S2XN+13+14,,3^=—&—=-------=",ᦑ⌱A஺SMCF2+14+152V232.2009ᔁᳮ!"#$$%=1஺
0Ḅ'(ᯖᑖ+,஽./.ᐸ$ᩩ232b245,6=7.86,ᡭᙠ;"#<.ᑣ>•>=A.-12B.-2C.0D.4ூὃBC௃EF⚪ὃG"#Ḅ2345ஹ"#ḄBH.IẠ⚪஺Kᦻ8᪆:ᵫ⚪/=2,ᦑ3=±/=±1,N$2,0,822,0....P'•R=-2—6,S12-U,±1=3—4+1=0,ᦑ⌱C஺22᪆2᪷W"#2345XYZ"#45[-ᓃ=1,ᑣ'ஹ(ᯖᙶ᪗ᑖ+,22ᱏ-2,0,822,0.`a86,%bᐭ45XYZ86,±1,ᑣXd>•ᵯ=0,

19ᦑ⌱c஺33.(2009ᔁᳮ)!m44x—3y+6=0tm/zx=—1,xᱥV=4x<${Pᑮm4tm4Ḅ}~tḄᨬF37A.2B.3D.——16ூὃBC௃EF⚪ὃGxᱥḄBHஹᑮmḄ}~.ᔠ⚪஺᪆m"x=-l,xᱥ2=4ᐗḄ.ᵫxᱥḄBH.Pᑮ(Ḅ}~PᑮxᱥḄᯖ8(1,0)Ḅ}~.ᦑE⚪ᓄ,ᙠxᱥy2=4x<$PdPᑮ8(1,0)tm/Ḅ}~tᨬF.ᨬF,8(1,0)ᑮm4:4x-3y+6=0Ḅ}~.ᓽ2=2’ᦑ⌱A஺min13x1-0+61᪆2᝞.ᵫ⚪X42V32+4234.(2009ᓭᔁᦻ)!ᙊG(x+l)2+(y-l)2=l,ᙊG%ᙊGᐵmx—y—1=0.ᑣᙊGḄ45,(A)(x+2)~+(y—2)~=1(B)($2)2+(y+2)2=1(C)(x+2)2+(y+2)2=l(D)(x-2)~+(y—2)~=1ூ¡ᫀ௃B£<-1=022a=2ூ᪆௃¤ᙊGḄᙊ,বb),ᑣ§⚪.ᨵீ,d©b-\b=-2'a+TᙊḄª«¬.,1,ᦑ⌱B஺.2y2x35.(2009¯°ᔁᦻ)±"#$•$=l(ao)Ḅ~᳛,2,ᑣaaA.2B,G

203D.12᪆᪆ᵫ=-µ=1X¶·b=J^,Rº᳛e=—=-----=2,da=lᡈa=3,a-3aa½᯿⌱⚗RÀ⌱D.36.2009ÁÂᔁᳮmy=x+l%ᙊV+y=iḄCÄᐵÅ,A.ÆᑗB.ÆÈÉm¬ÊᙊC.mÊᙊD.Æ~ூ¡ᫀ௃BIᓛூ᪆௃ᙊ0,0,ᑮmy=x+l,ᓽX—y+l=0Ḅ}~d=7=RV220<---<1>⌱B஺2M2加7,XG(-1,11.Lp.Ù37.2009ÁÂᔁᳮ!ÑT=4,ᕜÔḄÕᦪ/x=<1Tk2'I,ᐸÚÛ>0஺-,xe(l,3]±453/x=xាᨵ5Þᦪ.ᑣßḄàâ,A.ª■.1B.?åCg,|D.|,V7ூ¡ᫀ௃Bூ᪆௃è,éxe-1,1êë.aÕᦪᓄ,45/+2,=1,20,Þì<,$ªmíᙊ.ᐸî᝞ᡠð.Këᙠᙶ᪗ÅÚñZéX61,3êdî.`᪷WᕜÔឋñZÕᦪᐸYóôᑖḄî.ᵫ᧕m%öµíᙊ஺—42+1=1ு20ÆÈ.R%öªíᙊø$42+µ=1ù20úûᐳmë.45ាᨵ5Þᦪ.a^=[bᐭx—4f+J=lyN0d3m(9m2+l)x2-72m2x+135m2=0,ÿf=9ᶭ(f>0)ᑣ(t+l)x2-8+15/=0

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23ᑣa=oூὃIª௃ÀÁ⚪ὃÂᙊ&ᙊḄª«ᐵÅCõẠ⚪஺T᪆fᵫ8x2+y2+2ay-6^0ḄDEF^6+a2,ᵫh086+஺2%(_“%1)2=(É/Tùa=i4.(2009úᓅᔁᦻ)HüIOgᙊx2+y2-6x-8y+20=0Ḅ·ᩩᑗCYᑗIᑖFPஹQ,ᑣ¼PQḄ½F.ூQᫀ௃4ூT᪆௃0ᙊKL(*-3)2+(y-4)2=5{ᵫᙊḄᑗឋ
ᙠᵨᳮ|P0=427XV5.(2009ᔁᦻ)!ᙊ=+$=\(a>b>0)Ḅ&ஹ(ᯖ*ᑖ,-ᱏ(ߟc,0),8(c,0)ab~3!ᙊ45ᙠ6*P7---=--69ᑣ;!ᙊḄ<=᳛Ḅ?@BsinPFFsinPFFX22}-.ூGᫀ௃(J-1,1)PF?LM1,N-ᙠAP/K9ᵫᳮsinPFFsinPF^F]}2ᑣᵫ,ᓽaPF]=CPF2T*(ᓣ,ᐜ)ᵫᯖ*WXYZ9PF{=a+ex0,PF2=a-ex0ᑣa(a+ex)-c(a-ex)00=ᜐ^^ᵫ!ᙊḄ`aឋx>-aᑣᔞ=>—a9᦮ᳮ0[x0e(c-a)e(e+l)e(e+l)e2+2e—lு0,Leீ6l61ᡈeீn61,oee(0,l),ᦑ!ᙊḄ<=᳛ee(V2-l,l)LM2ᵫL᪆1rḄ=£puᵫ!ᙊḄva2a2cwὡ+PK=2஻ᑣ6஺{+r{^2஻ᓽr{=^,ᵫ!ᙊḄ|aឋac+a

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25PFFsinPFF}22lᑣᵫ9649BPaPF=CPF,*PᙠḄ(4,t2P£T*᳝,ᵫᯖ*WXYZ9PF௃=a+ex,PF=ex-aᑣ020a(a+ex)=c(ex-a)00a(c+a)a[e+\)ᵫḄ`aឋXo>aᑣD>a,᦮ᳮLe(c-a)e(e—l)ee-le?—2e—1<0,L—J+lc—a,ᑣ->c—/—2ac—/<(),ᡠ2—2e—1<0,L᪆1.c-ax2y27.2009ᓅᦻ!ᙊ6+ᓃ=1Ḅᯖ*-ᱏ,{9*Pᙠ!ᙊ493IPGI=4,ᑣ92\PF1=/w{Ḅᜧ¡-2ூᫀ௃2,120°ூ᪆௃¢⚪¤⌕ὃ§!ᙊḄvஹᯖ*ஹ¨©ஹª©ஹᯖ«¬Ḅᐵ¯
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394km2஻?28᝕2(2E2—8)4k2/2/8kyy=(kx+m)(kx+m)=k2xx+km(x+஽)+”C-----------------------------Fm=----------x2x2y2x1+2/l+2k21+2F2஻—8m2-8k2⌕஺4஺8◤᳝K2+%ு2=0ᓽ=0,ᡠP1+2/1+2N23஻/8F8=0,ᡠP/=Q_⍗2஺T8k2ᵨ2+4>஺ᡠPJ"?>2,ᡠP8[3m2>8஻@N|,ᓽ஻?NXᡈ஻Z['\>=]+^'ᙊᙠḄᙊḄᩩᑗ\m\ஹmm2_8977ᡠPᙊḄZ_'r=-yU=,`=abc32,ᡠdḄᙊ'VT7Fi+k,3m2-8-331+---------x2+y2=|,efᙊḄᑗy=+Mghijᡈᵨkj,lmᑗḄn᳛pᙠfᑗ'x=±qᙊr+s=1Ḅ't2u,±2!vᡈ38433w,±2xiyz{bᙠᙊᙠḄᙊ/+2=|ᙊḄ333ᩩᑗᙊEឤᨵA,B,!OB.4km}+12['k-1+222/n2-8~21+2-llIஹ)/,2W2-88(8/2+ஹ)/4kmஹ7—4x.....-..........ᡠP(/)=(+%2)-4X,X=(---)~21τK1+2/—(1+2,2IAB1=y/(x-x)2+(y-y)2=J(1+,+3)8(8/E2+ᵨF)(—/>l2l2-(l+2k2)2-

4032444+5/⁚2EVT4k4+4k2+]ߟf+4P+4P+1321জm᝕wOfIA6I=—[1+----'——]134/+F+4\k2['4/+±+428ᡠP0<----\——<-,ᓃ4/+4+48k2ᡠPmீ[1+----L-]<12,33+4+4k2ᡠPda<|ABK26m!mk=+—f32ঝmb=0f,1481=.3ঞmABḄn᳛pᙠf'tZ,±Zvᡈt-jjvᡠPef{bAB|Ḅ¡'3#=145ᓃ26ᓽ¤146¥ὡᢣ,26]ூ©⚪«௃:®⚪¯°±²³ᔲᙠḄµ⚪,¶⌕ὃ¸¹ᙊḄ᪗»%&Ḅ¼½\ᙊḄ¾¿ᐵÁ\ᙊḄ¾¿ᐵÁÂýÁᦪÅd%&Ḅ%ÅÆÇÈᵨ(%&)ÅẆ²ᨵᐵÊᦪµ⚪PË%&Ḅ᪷ÁᦪᐵÁ.9.t2009ÎÏᔁᦻvt®Ò⚪hᑖ14ᑖv᪷wR,ᙠX☢\Öᙶ᪗Á~ØÙᔣÛa=t/nx,y+lv,ᔣÛB=tx,y-lv,aßMtx,yvḄáâ'E.t1vdáâEḄ%&ãäå%&ᡠ⊤çèḄéêët2vØÙ஻z=',íå:ᙠᙊᙠḄᙊᙊḄᩩᑗáâEឤᨵ443,!஺4஺8t0'ᙶ᪗vãdîᙊḄ%&ëবØÙ^=L\/ᙊC:f+y2=R2I

41(¤(1)['a_Lb,a=(஻2x,y+l),b=(x,y-l),ᡠPa=nix2+y2-1=0,ᓽmx1+y2=1.mm=0f%&⊤ç\,%&'y=±1;m^=1f%&⊤çḄ³ᙊm஻û>0!஻z*1f,%&⊤çḄ³ᙊ;m^<0f%&⊤çḄ³ýè.1-ফ.m^=bfáâEḄ%&'b+>2=1,ᙊᙠḄᙊḄᩩᑗ'v=]+.,44y-kx+t(%&)kx2,τx?+4(ÿ+f>=4,ᓽ(1+48)/+8+44=0,k+r=1⌕ᑗEឤᨵA,B,ᑣ#=646%—16(1+4/)(%-1)=16(412—ᡝ+1)>0,8kt%)+%2=ᓽ4^2—ᓽ<4ᦇ2+1,1+4/QR4f2-4521+/5(4%-4)8k2/2”-4k2My,=(fcr+t){kx+r)=k,X[X,+kt(x+x)+t22t2}21+4/—-l+4fci+4k24%4t2-4k25t2-4/:2-4⌕04◤᳝<+%==0,ᓽ>—T+--?r=''—=0,1-121+4/1+4/1+A2ᡠC5%442—4=0,ᓽ5%=4D2+4E%<4^+1,ᓽ4F+4<20F+5ឤᡂH.ᡠCJK=Ly^kx+t=ᙊNᙠPḄᙊḄ•ᩩᑗ,ᡠCᙊḄTU=^J""ULVᡠWḄᙊ=f+y2=9.ViTFi+Di+455஺2஺G_ᑗḄ`᳛bcᙠdeᑗ=X=±4JL'+j=1k"hij᧼9ᡈ5455(-1V5,±|n)opqOAJ.0B.

42sVecᙠᙊNᙠPḄᙊx2+>-2=|,uvᙊḄwxᩩᑗyᙊEឤᨵ12r(3)_{=VdeEḄ|}=+>2=1,~L/Ḅ|}=)e=+.,K=L/ᙊ44C/+y2=R24_Eª_R=⊈e(1,2)d®¯eᡠCIAM<5—4=1,ᓽR~_R=°e(1,2)dIA|B|Iuᨬᜧ³eᨬᜧ³=1.ூµ⚪Hx௃:¸⚪¹⌕ὃ»¼LᙊḄ|}½¾¿ᐵÁeCLyᙊḄ¾¿ᐵÁeÂCÃÄ|}ÅÆẆÈᨵÉᨵÊ⚪,ᨵËḄÊ⚪.10.(2009ÌÍᔁ)(¸Ï⚪pᑖ16ᑖ)ᙠÑ☢L¥ᙶ᪗ÁI஺yeÕᙊ஺(¼+3)2+3—1)2=4½ᙊ

43C:(x-4)2+(y-5)2=4.2(1)ÖL/ÄA(4,0),E×ᙊGØuḄÙÚ=26,WL/Ḅ|}¢(2)~P=Ñ☢VḄepqcᙠÄPḄÛÜÝÞßᚖLḄL4½4,áâᑖãᙊCi½ᙊC2eEL4×ᙊGØuḄÙÚL"×ᙊC2ØuḄÙÚ®eåWᡠᨵpqᩩæḄPḄᙶ᪗஺ூ᪆௃¸Ï⚪¹⌕ὃ»LᙊḄ|}ஹᑮLḄêëFìeὃ»ᦪîïðWñòஹsᔠᑖ᪆Ê⚪Ḅñò஺pᑖ16ᑖ஺(1)~L/Ḅ|}=-4),ᓽfcf_y_4Z=0ᵫᚖUóᳮeuᙊNqᑮLIḄêëõ=Jb(ö¼=1,I_%k-1-4kI÷ᔠᑮLêëFìeu/=1,VP+i7ᓄùu24k2+7k=0,k=Qor,k=——247WL/Ḅ|}=y=0ᡈj=°(ú-4),ᓽy=0ᡈ7x+24y—28=0(2)~Pᙶ᪗=(஻?,஻)eL4Ḅ|}ᑖã=y-n-k(x-m'),y-n-——[x-m),ᓽkx-y+n-km-0,——x—y+n+—m=0ZcIckK=L6×ᙊGØuḄÙÚL4×ᙊC2ØuḄÙÚ®eᙊTU®஺ᵫᚖUóᳮeu:ᙊNGᑮL4C2L4Ḅêë®஺,4=1!□»1.jτI------5+MH—mIᦑᨵ+kᔆ_k.ᔊᓄùu=஻2—஻3,ᡈ(ý஻+8)ᦇ=ý+஻5——(2-m-n=0fm-n+8=0ᐵkkḄ|}ᨵÛÜÝeᨵ\eᡈÿ
[m-n-3=0[m+n-5=0pᙶ᪗(_,ᧅᡈ11.(2009ᐰᔁHᦻ)(⚪ᑖ12ᑖ)x2y2V3ᙊC:/+■=1(஺"ᓃ"°)Ḅ&'᳛)ᨌ+,-ᯖFḄ/0I1C234AஹB

446+71Ḅ9᳛1:+ᙶ᪗;0='Ḅ>&Y(I)Aa,bḄDE(H)CHIᔲKᙠP,N71OFQᑮS)TU:+ᨵ°0=°4+06ᡂ[\]Kᙠ+A^ᡠᨵḄPḄᙶ᪗11Ḅ`aE]Kᙠ+bcᳮᵫ஺᪆⚪ὃh᪆ij1k☢ᔣnopᔠrᵨtu+v)w/xrᵨᑮ/0Ḅ>&yz{|ᙊᨵᐵᐵ~z+vᑭᵨᔣnᙶ᪗ᐵ~|`aḄ+᪷1~ᦪᐵ~w⚪+ᱯḄᜐᳮ஺(I)b(c,O),7/Ḅ9᳛1:+ᐸ`ax-y-c=O,஺ᑮ/Ḅ>&|0—0-c|cV2-V2..cᦑ—7==,C=1V22ma=V3b=Vo2-c2=V2(H)CHKᙠ¢+N7/OᡝQᑮS)TU:+ᨵ¤=¥+¦ᡂ[஺ᵫ(I)CḄ`a2/+3/=6.4(+)+1),8(4,%).(i)7/ᚖ/x¬:+/Ḅ`ay=஽(x-1)CHḄPN¦=ᔍ+¦ᡂ[Ḅᐙ⌕ᩩ²IPḄᙶ᪗(3+/,³+)+´2a+x)2+3(%+)2=62᦮ᳮ2xJ+3y
+2X2+3y2?+4x,x+6),y=62212¸Aஹ3ᙠCH,ᓽ+3%2=6,2]+31=6ᦑ2¼ᐗ2+3ᨴ+3=0জÀy=Z(x-l)Ãᐭ2/+3>-2=6,ÆᓄÈÉ2+3yÊ/-6/x+3᝕2-6=0

45TÌ6k°3n—64IX]+X,=-----X|X,=--------12222+3k'2+3yc-4k2yy=k-
x-1X-2=i2i2oᓝ3K3Ãᐭজ+k஺=2,Ï:᳝+஽=4I³+y=kQ+X-2=-1,ᓽ¢É)Ñ22ÒÏ+7&=-Ô:+/Ḅ`aVIr+y-Ö=0E227×=Ø:+Ppjp,/Ḅ`aÙx—y—⊈=0஺ÉiiÊ7/ᚖ/4x¬:+ÛÜ+¤=É2,0Ê+CHKᙠPN¤=Ý+¦ᡂ[஺Q5______pH+CHKᙠ¢É)+ßY—ÊN஺P=OA+OBᡂ[+Ï:)/Ḅ`a22-^2x±y—-x/2=0.12.É2009ãäᔁᳮÊÉ⚪ᑖ14ᑖÊå0C:y=/1/0/:x—y+2=03464É4+uÊç8É4,uÊ+´x

4651,11A2y((=(2x((4ᓄ67y=/0(%+(,-p;<2Ḅ=(,>?A@2283Cᔠ,ᑣ—l<2x—,<2,ᓽ(,0)2,x0=acos/3,yo=bsin0,U<0<—.q00ab~2஺q4x+_y=lᚖq,O'ᙶ᪗,qOPḄ'a,q஺ḄQ-"'22(I)P;ᙊ+=1q4Ḅ((II):tana,tan/7,tany᪀ᡂᦪᑡ.~⚪⌕ὃq@ᙊḄ᪗JK@ᦪJK,q@0Ḅ¡¢ឋ¤,ᦪᑡ¥Ạ^§஺ὃ¨ᔠ©ᵨ^§ᑖ᪆¬⚪ஹ®¬⚪Ḅ¯°஺ᩈ⚪ᑖ13ᑖ஺

47IJ²(ᵫ³x+᦮y=l>=52—x°x,¶ᐭᙊW+g.=l,ab~a~y^ab~x=acosBஹ>,aº1¶ᐭ2½,x~-2acos/?-x+6/~cos~0=0,ÀÁx=acosft.jo=/?sin/”—,ᓽq4ᙊᨵ(P.ÅÆ,JKÇ1ᨵ(b>0Ḅs<᳛'3,è'ᙊ<஺ᙊéYêëYZḄᙊqy=x+2ìᑗ,Iíab

48(II)îᙊḄï,ðᯖᑖò'Ò@ó,q*õ>xêᚖq,öq“yêᚖq,L"P..íP,lᚖqùᑖ4ḄMḄHIJK,úᢣ0üý஺ூÿ௃(1)ᵫᙊ=+=1/=/+/e=£=aஹbᐵ᪷a1b2a3"ᙊ#ᑗ%&aஹb.(2))*+ᐵ,ᓄ./ᦪ123%456Ḅ89:;<⌕>஺ூA᪆௃(1)ᵫC0=E.\e2=4=^-^=-J=2K6=^==M3a2a23a23Jl+1b-2,a2=3QRa=S.b=V2.(2)ᵫ(1)UFi,F2XYᑖ[.(-1,0),(1,0),ᵫ⚪]3^P(1,t).(t#0).bcdPF,Y.N(0,1),^M(xஹy)iᡠ%klmḄn]Y.ᵫC*MN=(-x,--y).p=(-2,-/)qrsp=2x+f("v)=஺8w9ᦪt4J=-4x(x?t0)2ᐸkl.zᱥ(◀}Y)15.(2009pᔁᦻ)(⚪ᑖ14ᑖ)᝞UᙊG:(x—2>+y2=/iᙊ+/2=1ḄᑁA3஺ḄᑁᑗᙊᐸA.ᙊḄ⚔Y.(1)%ᙊGḄr;M(2)YM(0,l)ᙊGḄXᩩᑗᙊCE,XY,¡EF"ᙊG#ᑗ.A¡(1)^3(2+,¢),ᙊ£GA8C஺8C¦§C“ᵫ4s_X)ADAH736^76+rVo-r.wmI?(2+r)~12—4r—(F—2)(r+6)Y3(z2+r,y)ᙠᙊm,=\--------=-----------=------------(2)0161616ᵫ(1)ஹ(2)´415µ+8r—12=0,A4/*=2ᡈr=·9(¸w)35

49ஹc4ফ^YM(0,1)"ᙊ(X-2)2+J?=·#ᑗḄ12.:y-\=kxব2\2k+l\,ᑣ—=Iτᓽ32½+364+5=0(4)3V17F-9+J41-9-V41A4K,k=1162216¾¿3À/ᐭ·+V=14¿16/+1À2+32kx=0,ᑣÂCÃḄA.x=-·Ä·X1616H+132k32k^ᔆ¿Ç,ᓰX|+1,£X,,%,X2+1,ᑣ.=_vvÉ=_vM/¡lOKj4-116£+1ᑣFEḄÍ᳛.¡k=bxskv=k+k=3EF}2x-x1·16᝕#242}CiFEḄ12.:y+mM··1MM¿Ð+À16Ñ+1416K2+J37ᓽµᱏ·§232ᑣᙊ£¿2,0ÀᑮFEḄÕÖd=7=·E3V16ᦑØÙᡂ.16.¿2009pᔁᳮÀ¿⚪ᑖ12ᑖÀ%:MN.ḄᙊXÜY.

50A¡পᵫU4Þ(3b,0)A(-b,%),ᑣÞ4Ḅ12.¡/=—9஺-36),3hàx=04y=9%ᓽ6(0,9%),%0x=x0=2x22ᓽ/ᐭæ___ç.=14.-______y__^(X,áᔓã1,äå=5%y=8஻b225b205y22ᓽḄklEḄ12.é-ê=1.22.xy(2)ᙠë·ì=1ày=04½=2/,ᑣíî^6(-"ï,0)Ci஺8Ḅ12.¡y=—⊈)஺஺Ḅ12%+72b.:y——1(x-y[ib),xஹ-Y2bᑣM(0,64)N(0,9*),M+J2Z?%72bᑣMN.ḄᙊḄ12.¡f+(y-)(y+)=0,.+12஺2b9/J2222àM஺4£òóôᙠõ-ö=3/2஻22SXCix=+5bᓽMN.ḄᙊXÜY(-540),(5஺,0).17.(2009ᜩøᔁᦻ)(⚪ᑖ14ᑖ)22Uᙊù+2=1(஺ïᓃï0)ḄXûᯖYᑖ[.Þ(ߟc,0)B(c0)(cு0)ab£(—,0)ḄᙊA,BF\AHF,B,1FA1=21F,8Itc(IᙊḄ᳛(II)ABḄ!᳛;(III)#CAᐵᙶ᪗()*FB+ᨵ-H(m,n)(mW0)ᙠMF.C2

51nḄ᜜6ᙊᓃ2Ḅ8஺mூ;ᫀ௃>1?e-=᧧ফk=±zব-Ba33m5(1)DEᵫ஻8£1641=1J81,K—W,LMூ᪆௃IEFIIὡAI2}a——CC_____c᦮ᳮKS=3°2,ᦑ᳛ea22a3-+cC(2)D:ᵫ>1?XL=/_02=2,2,ᡠ\ᙊḄ]^_\ᑏa2x2+3y2=612#ABḄ]^ad=ef-g?ᓽy=A>x—3c?Cy=k(x-3c)ᵫiX#A>x,,j?6>஽l?ᑣnoḄᙶ᪗pq]^rs2x2+3y2=6c2tuy᦮ᳮK>2+3/?/-18v5+27v஺2-6஺2=0y⚪{A=48c2(l-3Z:2)>0--3?ᵫ>2?XX,=0,x=y,=-¡¢KA>0,J^c?ᵫiXKC>0,—¥?2V2c6-©>x+9?,1XªḄ>0?AF,Ḅᚖ§ᑖ1Ḅ]^ay-2222

52«Ḅ᜜6ᙊḄᙊ¬᜜6ᙊḄ]^a>X—£>+V=>£+C?222¯8Ḅ]^ay=V2>x-c?«pq]^rC79c2/in--92+n~=——5c242c,,n2V2ீ24ᵫ±wO,DK஻2=-,H=-----ᦑ-=-----32m5rn=<2>771-c?³=´¢µᳮ_K2=¶3m5ூὃ¸௃¹º⚪»⌕ὃ½ᙊḄ᪗¾]^¿ÀÁឋÃ]^ᙊḄ]^ÄÅẠXÇ஺ὃ½ᵨᦪ]ÊẆÌᙊ┵ÎḄឋÿᦪÏᔠḄÑÒ,ὃ½ÓÔÕS¿ÖᳮÕS஺18.>2009×ᓅᔁᳮ?>¹º⚪pᑖ14ᑖ?>©{EᙠÚ⚪ᔁ+Û;ᦔ?ÝᱥJ/=2Px>p>0?Ḅ)*ª+-A>a,0?>஺>0?ḄÝᱥMஹNäMஹNᔣ/:x=1aÛᚖᚖqᑖæaNஹ஺>I?a=ç■¢éEAM.1AN.|211>II?êஹAANN1Ḅ☢ìᑖæaS.S,,«ᔲïᙠðI,2ñK)ò{Ḅaு0,ôᨵSð=/tS@2ᡂ஺÷ïᙠøùḄ8ð÷úïᙠûüᳮᵫ஺20⚪஺¹º⚪»⌕ὃýÝᱥḄù¿ÀÁឋÃħ☢D᪆ÀÁḄÅẠXÇὃ½ÿᔠ
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Ḅ஺14ᑖ⚪MNḄ!"#$=ᵨ+஺,“*+,"ᐭ2%ᑣᨵM-a,3,N-a,#\x-my+a.ᵫ678x:;2'1+++2஺=2P+4ঝRᵫyS=2pX|,y=:=1V?=2ag=/ঞ4p-4p-I᝞Z1,[஺="0\]&K,0ᓽ#aᱥḄᯖ]/#ᐸex=—K222

53ppgh$i;,,ᑁkᵫজ:%#=_pUUULVUUUVmn1QAM=-P/AN|=-p,%UUULVUUUVஹccAM,-ANஹ=p2+%%=P~P=஺ᓽAM11ANஹmn2QK.=KAM=*KA%(11)vᙠ4=4,x:yzḄa>0,{ᨵS}=455ᡂm᝞:mn1/xḄ]#4,ᑣ|஺=|0▂=஻஺IJᨵ5,=~\MM\-\AM\=^Cx+a)\y\lilllS=~\MN\-\AA\=a\y-y\.2tlti2S3=},|NN|H4M=}5+஺)᧎|s|=45OH%-%|2=a+஺|%|«2+஺᧎|0a2KM+#2-4%!]=2+஺ᓰ+஽+஺2]|1%|জஹঝஹঞᐭᓄ:a2/4m2p2+8ap=2ap/2am2p+4a29=4a2P<2P+2aឤᡂᓽyz஺>0,5}=4⎃ᡂ

54mn2᝞Z2,MN1,NM,ᑣᵫ,#=;2ᓺ,¢=2Pxi:K=¤=¥=¦.=¥_=&=/^*,ᡠ«6>0Ḅ¿ஹÀᯖ]ᑖÁ#ὡஹF,ÄÅ᳛e-----Àeab2!"#x=2஺IǼᙊḄ᪗e!";ID]”Ḅ/̼ᙊI஻ஹNÍ]Î|A'+C2⏣Ç/Ḅ!"஺£=±ூ᪆௃Iᵫ»:2,:a=&,c=l6=2ஹCh=\ja2—c2=1Xr.,ᡠǼᙊḄ!"#ὡ+V=14ᑖ(II)ᵫ(I):ὡ(;1,0)ஹÔ(1,0)X=-lr-X22;:y=±ÙজÕ/ḄÖ᳛×vᙠᑣ/Ḅ!"#1=-1,ᵫ6--Fy=12I2V2V2M(-1,—-)>N(-l,--—),22_____r."7+|=ߟ2,ᑶ+—2,—Ù=C4,0|=4,Þ»ßàá஺ঝÕ/ḄÖ᳛vᙠ/ḄÖ᳛#ᑣ/Ḅ!"#y=kx+l,

55M(X|j)ஹN(x,y),22y=k(x+l)ὶ4x22i,7ᐗ:(1+2᝕2)x2+4/x+242—2=0—+y=1I2.-4k22k2-2••+X-2-];,XiXு-T~,,-1+2/121+2/2kx+%=%X|+/+2=;5,1τoK~•:F2M=æ-1,+,FN=ç-F%2F2M+&N=X]+4-2,%+#;+è=R+&*+»+>"=+i^y=êᓄ:40A4-2342-17=0:/=1ᡈk2=_11ì840/.k=±1ᡠÇ/Ḅ!"#y=x+lᡈy=_x_].................................................12ᑖ20.2009ᐰîᔁHᳮ¸¹⚪ºᑖ12ᑖ»¼ᙊC:/+/=1஺>%>0ḄÄÅ᳛#ïÀᯖ]FḄ/CßIAஹB@+,[/ḄÖ᳛#1hᙶ᪗®]஺ñI"ḄòÄ#ó;2IÇa,bḄô}IDCJᔲvᙠ]P,x:[/öF÷ᑮù;úûhᨵü=ᔍ+AᡂþÕvᙠÇÿᡠᨵḄPḄᙶ᪗/Ḅᙠᳮᵫ஺1fc,0,/:x—y—c=0,ᵫᙶ᪗஺ᑮ/Ḅ5-ᑣ"!"1=$,&c=l.(e=£=),.♦.a=6,b=0.722a3xv*II+ᵫI+,-ᙊḄ஺/+]=1.4M+ஹBx,y22

56ᵫ⚪5,/Ḅ6᳛!80,ᦑ;l:x=my+\<ᐭ-ᙊḄ>᦮ᳮ&*2m2+3+y2+4஻F!4=0,GᯠAு஺஺4/774-ᵫMN8ᳮᨵ+y=-,y,y=-,.......জ22222m+32m+3.ᎷᙠP,RS=+SᡂUᑣᐸᐙ⌕ᩩZPḄᙶ᪗*[+x2M+y2+Pᙠ-ᙊ^ᓽ`a+SLb1=1஺᦮ᳮ&2xJ+3++2%2+3y2?++6%%=6஺2(4ஹ8ᙠ-ᙊ^ᓽ2x+3yj=6,2஽2+32=6.ᦑ2k஽+3lm+3=஺................................ঝoXX=஺pq+1+*r+1+="7%%+r*%+%++1sজ<ᐭঝ&/=~t2_V2.V2x233nnD.•M+%z—ᡈ----+X+=------z---F2=!ᓽP*!,±—+.12122-2/+3222,pg,!ᙛ/“=+1;.“3ஹ᪷=--,P*-,—+,/%=---y+1•2222᪆ᜐᳮ᪆⚪⌕ᙠ“”^Ḅ஺ᡠ“”⌕Ḅᳮ஺¡¢⚪£ᵨḄḄSᳮ£ᵨ¥¦Ḅ§¨©,!ª⊤!ª¬!ª®!ª¯°஺ᨵ᎛ᳮ²³ᯠ´ᑖḄ஺¶᝞¸¹ºḄ☢¼ᵨ½¾¿Ḅ!ÀÁᵨÂÃᜳ¹ḄÅÆḄ!ÀÁᑖᒘᡂÈᑖᩭÊᙠᐹÌᜐᳮḄ᎛⌕᪷¨ᐹÌ¢⚪s⚪5ÃÍÃÎ᦮ÏÐᔠ〉ḄÓẚÕᑗᐭ஺21.*2009Øᓭᔁᦻ+*¯Ü⚪Ýᑖ13ᑖ+Þ,-ᙊCḄ>àᙠᯖᙠxâᓃäªᯖåâḄªæ⚔Ḅèú!ª☢¼8Ḅź*éQ+.*I+ì-ᙊCḄ*II+P-ᙊCḄíîXâḄïðPḄ/-ᙊCñïòM,NÂôMNḄ>õᙠźQᑁ*ᒹøÃù+ì/Ḅ6᳛Ḅúûý஺

57*1+§⚪5-ᙊCḄ0+=1*஺>6>0+,ᯖ2c,atrᵫ⚪ᩩQ2=8/=C,ᡠ஻=/=4.222ᦑᙊCḄ+=184II!ᙊCḄ"#$x=-4,ᡠ'PḄᙶ᪗-4,0!,,ᯠ.$/Ḅ/᳛12ᙠᡠ.$/Ḅy=Mx+4!஺᝞8'NḄᙶ᪗ᑖ;/0LC——

58ᡠ'Gᙠjk஺ᑁ(ᒹnho)Ḅᐙ⌕ᩩ%ீᐭ0+2,2*2+2JI-1<0,sᓽJoNx()-2.2%2—2K0.J3-1J3-1LC_YZ_0,a>0)xfaḄ"ஹgR'.$/'B,xfᚖ.S/V'BḄ_'AS$CV'T.(1)$Cᙊ'TᙊABḄᑖ''SḄᙶ᪗T(II)᝞8'MPSB.Ḅᙊ$?TBḄ'Pᔲ2ᙠCO,M,S'ᐳ$¡2ᙠaḄ|c2ᙠ¢£¤ᳮᵫ஺19.ூL᪆௃L¨_(I)©$Cᙊv4=1,᝞8ᵫ'TᙊABḄᑖ'CNBOT=60°ᡈ120°.(1)©NBOT=60°vZSAE=30°.iAB=2,ᦑᙠ4SAE@ᨵSB=AB-tan30°=¬,.s(r,®)T(2)©NBOT=120°v,¯ᳮdC'SḄᙶ᪗(1,26),°±1,²³)ᡈS(l,2´)3(II)Ꮇ2ᙠa(a>0),COMS'ᐳ$.ᵫV'MᙠSB.$ḄᙊᦑBTLOS.,ᯠ.$ASḄ/᳛k2ᙠk>0,d.$ASḄ)=k(x+a).A2_1ᵫ

59,,a-crk~“K/ஹ2akᦑº=---c-»¼y=k(x+a)=-----------7-v.1+a-k-TT1+஻½2a—a2k22aksᓽ“).-2a2k22ak•:3(஻,0),¿.BT=((TwF,T77F)).\X•-Cl/À——ᵫ0,a>0,.,.a=V2ÂÃÄ©a=Åv,O,M,S'ᐳ$.ᦑ2ᙠa=V2CO,M,S'ᐳ$.L¨(I)¯L¨_.(II)Ꮇ2ᙠa,C0Ms'ᐳ$.ᵫV'MᙠSO.ḄᙊᦑSMVBT.,ᯠ.$ASḄ/᳛k2ᙠK>0,d.$ASḄy=k(x+a)2X2_iᵫ2_2'T(X,y)ᑣᨵx•(_஺)=_TTTᦑº=_T»¼ᓣ=k®+a)=[2/sᓽ7(_È\2,).a^a~k~\+a-kl+a~k~l+ak-•B(a,0),.\k=-=__[ᦑKSM=a2kBTx-aakTᵫ[X°CS(a,2ak),ᡠ.$SMḄy-2ak=a2k(x-a)[y=k(x+a)0sM'ᐳ$©Ë©0ᙠ.$SMᓽ2ak=612k(-a).•Pa>0,K>0,:.a=ᦑ2ᙠa=yf2CO,M,S'ᐳ$.23.(2009ÌÍᔁᦻ)(⚪ᑖ12ᑖ)3ᙊC'A(1,-),Rᯖ'(-1,0)(1,0)o2(1)ᙊCḄ;

602!E,FPᙊCḄRÓ'᝞Ô.$AEḄ/᳛AFḄ/᳛Ö×ØᦪÚ¤.$EFḄ/᳛Û|ÜÝÛ|஺2222!LI!ᵫ⚪Þc=l,dᙊ—•+=1஺1+/?Ia3NAᙠᙊᡠ--+^=1,LC»=3,b2=__ãä!஺l+b24஻422ᡠᙊ—+—=1......4ᑖ433x2y2II!.$AECy=Mx—l!+],æᐭè+ஹ=1C3(3+4k2)j2+4^(3-2^)x+4(__k)2-l2=023E(%E%)F(4y).N'A(1,-!ᙠᙊᡠF23,4(|-A)-128ᑖi.$AFḄ/᳛AEḄ/᳛Ö×Øᦪᙠì@—kk,dC3,4(-+k)2-12_2_________=3+íy=-kx+^+k.FFᡠ.$EFḄ/᳛k=""=”p+&)+2k=1EFx-xx-2PPPᓽ.$EFḄ/᳛Û|ᐸ|......12ᑖ224.2009ÌÍᔁᳮ!⚪ᑖ12ᑖ!ᙊC'Al,ñ!Rᯖ'-1,0!,1,0!«23!ᙊCḄT4!E,FPᙊCḄRÓ'᝞Ô.$AEḄ/᳛AFḄ/᳛Ö×ØᦪÚ¤.$EFḄ/᳛Û|ÜÝÛ|஺20!L1oQI!ᵫ⚪ÞC=l,dᙊ——+=1,LC»=3,b2=--ãä!l+b24஻4

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64ab2755a=2ᵫtb=laTc=y/5c2.a2+b2ᡠicḄVWQ2=1.4IImABḄVWy^kx+m,ᵫ⚪Ü5á<2,m>0m2mᵫtABḄᙶ᪗|y=2x[y=â+ã,¤Iä,1,Iஹ,(-m2mᵫåt3BḄᙶ᪗[y=-2x2+12+Tuunuurm1Zஹ2m,12.AP=/IP8,tPBḄᙶ᪗(----),----(----+----)T+I2^12+kl+A2-k2+k³PBḄᙶ᪗´ᐭj-tê=ëmQABæyFḄçBᑣQBḄᙶ᪗0,me=5,⚔Bᑮ¦§ḄNO2ì஺25

65(I)UicḄVW(H)᝞îPQiCGIBA,BMBᙠiCḄMᩩ¦§G]ᑖPï_®Iஹ—■ߟ-1ßò▲X=UA4O8☢ÔḄÕÙ஺28.(01⚪3ᑖ14ᑖ)x2s5iCḄVW2T=l(aுO,bுO),aO:᳛e=ô,⚔Bᑮ¦§ḄNOõ.25(I)UiCḄVW(II)᝞îPQiCGIBA,BMBᙠiCḄMᩩ¦§G]ᑖPï_——1®Ißò▲.XAP=APB.Ae[-,2],UAAOB☢ÔḄÕÙ.9/gkÛI(I)ᵫ⚪Ü5iCḄ⚔B(஺,஺)ᑮ¦§ᳫ-b=0ḄNOG5ah2>/5Hnah2A/5T‘ᓽ"=ù’V50,n>0.ᵫQ=%ýtPBḄᙶ᪗(^^,2Q"+²,1+41+A³PBᙶ᪗´ᐭþIf=1,ᓄtmn=(1+2W)-.4427T114mZAOB=2^,vtan(---6)=2,tan᜛=—,sin᜛=,sin2᜛=.2225

66IOA1=RnP\OB1=&SJoAl1081sin26=2஻?஻="+')+l.AOIi224S(2)=l(2l)+l,2e[1,2],+2A3I«QᵫS'(2)=0*4=1,S(1)=2,S(3)=-,S(2)==,334i8,2=1-.ZiAOBḄ☢45*ᨬ782,,4=-.AAOBḄ☢45*ᨬᜧ8:.;33.OAOB☢4Ḅ58=>?2,".@AB(I)C@A(II)DEFABḄGHIy=kx+m,ᵫ⚪KL\k\<2,m>0.ᵫMy=kx+m2m*ANḄᙶ᪗I(-B2-Jy=2x2~-kᵫMy=kx+m-m2m*BNḄᙶ᪗I(■9)y=-2x2+I2+722m12ᵫAP=APB*PNḄᙶ᪗I(——(——2+1?1+72^T+2+7A+A2-kTPNᙶ᪗Uᐭ£V=1*YZ=(1+2)\44-k22DQIEFAB\y^Ḅ_N.ᑣQNḄᙶ᪗I(0,m).S=S=S=^\OQ\\XA\+^\OQ\\xS\=^m(xA-B)A0BA0QBOQXmtnஹ14m21.1ஹτ—m(----------1----------)=------7-=—(dH--)+1.22-k2+k24-f222ghC@A.29.(2009Yjᔁᦻ)(m7⚪nᑖ12ᑖ)22pypLqᙊB+2=1(஺ுᓃு0)ḄvஹwᯖNᑖyIᱏஹF,{|᳛e=T-,w2a~b2FGHIx=2஺(I)qᙊḄ᪗GH;(II)NὡḄEF/\qᙊ_MஹNN.|7+ὡᡠ=ὃ5,EF/ḄGH஺

67c_V2ூ@᪆௃(I)ᵫpL*1"2@*a=JIc=l4B2ஹCb=\la2_02=12ᡠqᙊḄGHI5+>2=1........................4ᑖ(II)ᵫ(I)*ᱏ(1,0)ஹ(1,0)“=15জEF/Ḅ᳛ᙠ.ᑣEF/ḄGHIX=-l,ᵫ*y=±Jbr+r=l222________/yJ2A|^M^V|=(-2,^_)(-2,-^-)=|(-4,0)|=4,¤\pL¥¦§஺++ঝEF/Ḅ᳛ᙠ.DEFEF/Ḅ᳛Ik,ᑣEF/ḄGHIy=&(x+l),DN(x,y),22y=k(x+l)ὶ«4X22.¬ᐗ*(1+2®)*2+4|+2-—2=0—+y=1I2--4k2Ik2-!,*•X+>2=f(᳝+%2+2)=■~TTT.1τoK³´=(ᓰ1,¶),·=(%—LI)F2M+FN=(d¹4-x-2,y+y)222Iẞ+»7ux-2)2(y,+y)2=ᖃ¾=¿l+2+2ᓄÁ*40%4_236-17=0

68@*®=Â᝕2=_L(ÄÅ)40/.k=±1/.ᡠEF/ḄGHIy=x+lᡈy=—x—l............................................12ᑖ30.2009ᐰÈᔁIᦻ)(m7⚪nᑖ12ᑖ)(ÉKZᙠÊ⚪ᔁËÌAÍᦔ)᝞Ð.pLÑᱥFÓy2=x\ᙊ“Zx—42+;/=Ô஺ு0)¥_AஹBஹCஹDYÕN஺(I)rḄ58=(II),YÖ×ABCDḄ☢4ᨬᜧ-.ØÙFACஹBDḄ_NPḄᙶ᪗஺@Z(ITÑᱥFEZV=xUᐭᙊÚZ(ஹ—42+/2=/(Ûு0)ḄGH.¬Å
2,᦮ᳮWx2-7x+16-r2=0(1)ÑᱥFEZV=x\ᙊMZ஺42+/=ᔆ2&ு0)¥_AஹBஹCஹ஺YÕNḄᐙ⌕ᩩâ>ZGH(1)ᨵÕ¥äḄå᪷49-4(16-r2)>0r<_z%>zV5%]+/=7>0ᓽ422஺@¤ÕGHè*é0-4

69SJ(7+2.)2(7-2.)4(7+2.)(7+2.)(14-û,1,7+2.+7+2.+14-4.ஹ31,28ஹ3<-(---------------------=--(—)2323,ý,7+2.=14-4♦.ᓽ.=.-5ᨬᜧ8஺þÿ
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