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23ூfafP(1)ᵫ⚪ic^P40n=12,f^:n=0.3(2)ᵫ⚪ic^P40+40(1+m)+40(1+m)2=190,17ஹf^Pmi=—,rri2=-(lm)22...ᵨ ᫀ ᳮḄᔆᦪ#oP40(1+m)=40(1+50%)=60(0)(3)p&ᵨ ᫀᳮ<=I100n=100X0.3=30,ᑣ(30-a)+2a=39.5,f^Pa=9.5,ᑣQ=20.5.p&ᵨᵬ ᫀᳮ<=ḄQox,Q: ᫀᳮ<=I100n=100X0.3=30,fs&P(30-a)+2a=39.5a=9.5x=20.5fs:tuᔆ32+2=39.5f^Px=y5ூNzὃ{I&ᐗR S|&ᐗ&R SḄTᵨ.f⚪ᐵ}~⌕⚪Ḅi᪷⚪_Ḅᩩ_ᔠ〉ḄG#ᐵᑡ_ Sf.23.(11.00ᑖ)(2018•)ᙠABCDAB=12,P~AB%&N4PBCZPCᢚ⚔NBḄTN~NG, NBBELCG,ᚖoEᙠAD%BEPCeNF.(1)¢1,£NE~ADḄN¤P¥AEBADEC(2)¢2,জ¤:BP=BFঝFAD=25,AEVDE¨cos/PCBḄঞFBP=9¨BE EFḄ.
24ூὃNLPª«ᔠ⚪.ூU⚪15P«ᔠ⚪.ூᑖ᪆(1)ᐜᑨ®_NA=ND=90AB=DCᑨ®_AE=DE,ᓽc^_¯°(2)জᑭᵨᢚḄឋ^_NPGC=NPBC=90ZBPC=ZGPC,²³ᑨ®_NGPF=ZPFBᓽc^_¯°ঝᑨ®_¥ABEs/^DEC,^_$µ`¶· Sfᓽc^_AE=9,DE=16,ᑨ®_¥ECFS/\GCP,²³_PC,ᓽc^_¯°ঞᑨ®_¥GEFsaEAB,ᓽc^_¯°.ூfaf:(1)ᙠABCDZA=ZD=90°,AB=DC,IE~ADN,AE=DE,(AB=DCᙠ4ABE|ADCE 4=20=90Uf=DE.".¥ABE^ADCE(SAS)(2)জᙠABCD,ZABC=90°,VABPCPCᢚ^ᑮ¥GPC,.,.ZPGC=ZPBC=90°,ZBPC=ZGPC,VBEICG,ABEPG,.NGPF=NPFB,/.ZBPF=ZBFP,BP=BFঝFAD=25¨VZBEC=90°,
25/.ZAEB+ZCED=90",,/ZAEB+ZABE=90°,NCED=NABE,ZA=ZD=90°,/.¥ABE^ADEC,,ABDE••--,AECDpAE=x,.\DE=25-x,.1225-x••=,%12 x=9ᡈx=16,VAE26VZGEF=ZBAE=90°,VBF/7PG,BF=PG,.”BPGF~½BPGF,/.ZGFE=ZABE,/.¥GEF^AEAB,,EFAB••—,GFBE.BE*EF=AB«GF=12X9=108.ூNz;⚪~ª«ᔠ⚪¿⌕ὃ{IḄឋᐰGÁḄᑨÂ|ឋ*ÃÁḄᑨÂ|ឋᢚḄឋᑭᵨ SḄÄfÅÆ⚪~fÇ⚪Ḅᐵ}.24.(12.00ᑖ)(2018•)¢ᙠÈ☢ZÁᙶ᪗OADBḄ⚔NA,&fcBḄᙶ᪗ᑖÎoA(-6,0),B(0,4). NC(-6,1)ḄÏÐÑ=&(kWO)XEOADBḄBDeNE.(1)ÒÓPOA=6,k=-6,NEḄᙶ᪗o3(-54)131(2)F¨ஹÕ NM(t-1,--t2+5t--)ENN(-t-3,--t2+3t22271--)ḄZyÖeNF,NP~ M,N×NḄØᱥy=--x2+bx+cḄ⚔N.ZzZzজFNPᙠÏÐy&%¨¤PZMNEÏÐÑ&ÚᨵÛᐳNxxঝFØᱥy=-$2+bx+cEOADBᨵÜᨵ>ÛᐳNtḄঞFNF|NPÝḼtḄßᓄ+¨ᔣ%âã¨tḄäæ1ᙠâã SZMNᙠªOAEBç Ḅ☢è.
27ூU⚪151Péᦪ«ᔠ⚪31Pᦪ¯ᔠ534Pê$µëᦪKᐸTᵨ535PRëᦪ¢íKᐸឋ.ூᑖ᪆1᪷⚪iîᐜᐵᦪïᐭk 2জᵨt⊤òZMNf᪆`Kb,c,^ᑮPNᙶ᪗ïᐭÏÐy=ஹf᪆`¤ᐵetḄ Sófᓽcঝ᪷Øᱥôõ|öÖᑖÎ÷°Øᱥ NB|ᙠBD%¨Ḅ@Aঞᵫঝøᑖ¯ùᵨt⊤òFஹPNḄúᙶ᪗_tḄäæKZMNᙠªOAEBᡠ Ḅ☢è.ூfafP1•••ANᙶ᪗o-6,0OA=6k• • NC-6,1ḄÏÐᔆ&xk=-6,63v=4¨x=—=--423 ••NEḄᙶ᪗o-û43ᦑaᫀoP6,-6,-ý4 2জpZMNf᪆`oPvi=kix+bi13-2+5-2-2k\(t—1)+b\ᵫ⚪i^:1237-+-2-2k](-t—3)+bi(þ=1f%=-#+4”
2819• •ᱥy=--%+bx+cMஹN13--2217--22-—-1-3)2+b(-1-3)+c[c=5£-2ᱥ᪆:y=-|x2-x+5t-23 • ⚔Pᙶ᪗(-1,5t—)26TPᙠy- x3ஹ/.(5tX(-1)=-623t~2 MN᪆(,35y=x+-Q-ὶ"J8^y=~x/.8x2+35x+49=0VA=352-4X8X48=1225-1536<06, MN&y=--'ᨵ)ᐳ.X1ঝ-ᱥB, ᱥy=-y+bx+c&./OADBᨵ01ᨵ23)ᐳ6/.4=5t-2,4t=g-ᱥᙠ5DB ᱥ&./OADBᨵ01ᨵ23)ᐳ10t-3911----------=4,4t=—2106—11.6=ᡈt=—5103ঞ9PḄᙶ᪗(-1,5t--)3.,.y=5t--P-lWtW6 yp;tḄ<ᜧ><ᜧ Pᙠ x=-l ᔣ @A
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36"F"Ḅᙠx¨ᡈxª«¬.15.Ḅᑨ1 ᳮ1¢ᩩx®¯°ᩩᡠ±³´*yµ¶·Hᩩx.¸ᓫᡂ¢´*yµx.2 ᳮ2¢ᩩx®¯°ᩩᡠ±³ᑁ┯yµ¶·Hᩩx.¸ᓫᡂ¢ᑁ┯yµx.3 ᳮ3¢ᩩx®¯°ᩩᡠ±³´»ᑁy⊡¶·Hᩩx.¸ᓫᡂ¢´»ᑁy⊡x.4 ᳮ4¢ᩩxªZ¯°ᩩx¶·Hᩩx.5 ᳮ5¢ᙠ´F☢ᑁ³ᩩx´ᚖxR´Fᩩx¶·Hᩩx.16.°yVḄyឋX1°yVyḄ¢°yVḄF½F½Ḅ¾¿ÀᡂḄy°yVḄy.°yVᐳᨵÂyᐸ(ᨵÃᐳ⚔ḄµÅᐳᨵ°Æ.2 °yVḄyឋX¢জ°yVḄyZ2360.ঝ°yVḄFyµRZÊËḄᑁyḄZ.ঞ°yVḄFyᜧRZÊËḄÍ372µῪ°yVḄឋXজµῪ°yVḄῪµঝµῪ°yVḄàyµ.ூ¸â¢µ½ÆµyঞµῪ°yVḄ⚔yᑖஹཨḄ(ஹཨḄäåᔠ.ூ°ᔠF3ᙠজµῪæঝཨḄäæঞཨḄ(æট⚔yᑖ.¬¨ᐗé(j(Í] ᐗéᡂᩩe«¬êᑮᐗé2ë.18.ìíᳮ1ìíᳮ.¢ᙠÍa2,ᡠ¬c>a,´ᳮc>b,ᓽxy°yVḄî½ᜧRôxy°yV(ḄõFᩩxy½.19.öVḄᑨឋX 1÷øù½Vᔜ½(ᡠêḄ½Vâ2(½V.Êûü½VḄVýþ᪵ᦋḄ.2ḄᚖḄḄ ḄḄ. —3ᙠḄ !"Ḅ✌ᐜ%&%ᱯ(Ḅᱯ()ᜐ+“ᨵ./0 "23+456.7ᱯ(Ḅឋ9:;<=Ḅᑨ?@.4A?ᱯ(Ḅ;.A?ᡠCᙠ<.☢E ḄF;GA?.20.A?Ḅឋ9 1A?Ḅ"Hᨵ./0 IJᨵ.KḄLMA
38?.2 A?Ḅឋ9জA?ḄᩩQ KQRঝA?ḄTᩩ ᚖᑖIJVᩩᑖ./RঞA?ᐹᨵஹஹஹḄ.ᑗឋ9.টTᩩ\A?ᑖᡂKᐰ Ḅ Ὺ`39ঝ¬ᙊ|Jᚖ=ᑗḄp¬ᑗ.ঞ¬ᑗJᚖ=ᑗḄp¬ᙊ|.(2)ᑗḄឋ9x®!H°.ᩩ±ᔠ!ᑡ`KᩩtḄ³oTK´µ%.rs¶`Kᩩt{`KᩩtHজᙊ|RঝᑗRঞlᙊḄᑗᚖ.(3)ᑗឋ9Ḅ¦ᵨᵫᳮx¸¹º»ᙊḄᑗp¼ᑗḄ}᪀⌼ᳮF½ºᚖᐵ.¾¿HÀᑗ¼}Àᚖ.24.F.FFᨵH(1).ᩩ =øÂ.(2).K =ø.—(3)øÂḄᚖᑖ.—(4)ŸḄᑖ.—(5).øḄᚖ.25.cdF(1)cdFḄᭆÇH°.KFÈ.ᩩᢚÊTËḄÌᑖÍÎᔠ{KFLMcdF{ᩩLMdc{aᡃÐÑxCÒ{KFᐵ={ᩩ(ᡂc)d.(2)cdF┐.KF3ÔḄ.ᐹᨵᱯ(ឋ9FÕ.ᩩᑖᒘᡂḄTÌᑖÈḼdcᢚÊaÎᔠRcdFḄdcxC.ᩩÑxCØᩩÙÚÛᦪᩩ.(3)ÀḄcdFH Ὺ`A? ῪÝᙊ .26.ᙶ᪗lFᓄ-á(1)ᐵ=âdḄḄᙶ᪗P(x,y)=P(-x,-y)
40 2áFḄᙶ᪗Fᡈá)ã⌕®ᔠáḄä:FḄᱯ(ឋ9ᩭæºáãḄḄᙶ᪗.ÀḄáᱯ(äH3045°,60°,90°,180°.27.`Ḅçᵨ1 `èé▭⚪ḄëØᨵᐵìí.Hì;᧕ïìíḄᱥñḄòäஹìóô ᐵõᙠ=᪀⌼º`ìíḄäᦪ:ìíḄöä÷øºᡠ⌕æḄᱥñḄòäᡈöä.2`Ḅ.ùúHজ\é▭⚪ûüᦪý⚪þº☢F᪀⌼º`ᓄ`⚪ .ঝ᪷ ⚪ᱯ⌱ᵨ〉┦ᦪᡈᐵᑮᦪ ⚪Ḅ ᫀ!ᓄᑮ#▭ ⚪Ḅ ᫀ.28.&ᓫ(ᔠ*Ḅ+,-1.&ᓫ(ᔠ*Ḅ+,⌕0123456789:;<.=Ḅ+,.-2+,>?@ABᔠḄC᪾E⊤Gᱥ*IḄ@AJ☢LMNḄOABᔠC᪾PQᙠ@AJ☢I.-3.ᱥ*Ḅ+,ḄSTUVWஹYVZ[\]Wஹ^V_J`]Yஹ^VaMb.29.ᵨ᪵defg*ᵨ᪵defg*hifḄjdk;.1ஹᵨ᪵dḄ⚣᳛ᑖoefg*ᑖoVp@Ag*ᑮ@Aᒹrᜧtᦪ Ḅ᪵dᡃvwxp@AAᦪy>z{|᪵dᡠᒹrḄ~.ᡃvᵨ⚣᳛ᑖo,ᩭ⊤GM᪵dḄ⚣᳛ᑖop
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