空间向量求空间角的（练习）（解析版）

《空间向量求空间角的（练习）（解析版）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

ὃ
26ᔣூ⚪௃1.᝞ᙠῪA8C4hZC஻B=NABC=90°☢45஺☢ABC,Eᑖ
BDACḄᑣ☢AE6bᡠᡂḄ"ூ#ᫀ௃Bூ%᪆௃ᵫ(ᙠῪABC)ND4B=NABC=90°*☢ABC,᪷,☢☢ᚖḄឋ/0ᳮ23AD_L☢ABC,☢AfiD,ᡠ4ADL5C.5⚪67D4=A5=8C=x,ᵫ(ὡ9Ὺ:;Ḅᡠ4AE=5F=

17T0ᦑ⌱PB32.STABC—A'B'CAC=BC=AA',/ACB=90°,EBB'Ḅ☢CEC,AᡠᡂḄ`ab9()cV5d_V10efD•-----------U.---------U•----------51010ூ#ᫀ௃Dூ%᪆௃STABC-A3'C'AC=BC=AA',NACB=90஺EḄ.4CjC4xmCBnmCCzmp

2zA>yX3.|3STABC—NABC=90°AB=BC=AA]=2,Bg}ḄᑖEஹFᑣAEC/ᜳḄ`ab"A.3B.2C,1D.5555ூ#ᫀ௃Bூ%᪆௃᝞ᡠPᑖ4ὡx,»zmp

34.᝞ᡠzS┵P—ABCDPB=PD=AD=AB4B4D=60஺CD=CB=1,ZBCD=120°,”ஹNᑖ
PAஹABḄ.1"P☢஺MN஻☢PBC@2"24=☢PABCᡠᡂḄ`ab.2ூ#ᫀ௃1"%᪆@2"4ூ%᪆௃1"᝞MஹNᑖ~4ஹA3ḄᡠMN//PBMN⁐☢PBC.MN//☢PBCAB=ADZfl4D=60°,ᡠ4A3஺,CD=BCN88=120°,ᡠ4NC6O=30°,BCA.AB

4DNtAB,ᡠ48CDN,.DN☢PBC
MNcDN=N,ᡠ4☢DMN☢PBC.(2)᝞30OAO,CO,P஺AD=ABZZMB=60°,ᡠ4A3஺ᡠ4AO80BCDῪᡠ4COJ_BOᡠ4Aஹ0ஹCᐳᡠ4ACLBO.
PB=PDᡠ4P0_L5£),CD=BC=T,NBCZ)=120஺3ᡠBD=6ᡠ48=PD=AO=45=AO=PO=-,=ᡠ4AC>2+PO2=42,2ᡠ440LP0AOPO=O,ᡠ4POJ_☢ABCD.40ᙶ᪗jOA,OB,OPᑖXmymzmp<᝞ᡠḄqrᙶ᪗u,A|,o,oP0,0,|,ᑐ,C-5஺஺,*|0|BC=2277☢95cᡠᡂ஺

5_3ᡠ4cosீPA,BQ=ABC==G\PA\-\BC\3V2.4-------X12ᡠ4☢Q4BCᡠᡂḄ`abI.4ூ⚪☢௃1.᝞ᙠ486'D,ᑖ18,1CḄ஺¡ḄAFA02,B04.«/¡¬DEᢚ¢ᑮZA4¤,Ḅ¥¦§¨☢4%☢¤ᑗ᝞ª.I"P4஺__®@
II4c}☢43ᡠᡂḄab;ூ#ᫀ௃1"°%@U"⌳.3ூ%᪆௃I"AB=AC,ᑖAB,AC,

6ᦑ2¨AD=AE^ᦑADEῪ஺OE,ᦑ2¨40_LDE,²☢4஻£J_☢a'£஻´G஺£,AOu☢4OE,ᦑAOJ•☢3CE஺
BDu☢BCDEDᦑ4஺80.ᓽ.11"µ஺¶O”_L8Cᵫ1"234஺☢8CEDO஻,OEu☢BCE஺ᦑ2¨aO,O஻AO,OE,
OHLBC,BC஻DE,ᦑ2¨஺”_LOE.·ᡠ¸P஺”,஺£஺4¹¹ᚖᦑ4஺ᙶ᪗jOHQEQAᑖXyZmp

7“♦Ao=o-y-2z=0ᦑ2¨½ᓽ4n-BD=O-2x+y=0x=l,2¨y=2,z=-l.ᦑ஻=(1,2,-1).AC=(2,2,-2),/,Ka஻TC2V2ᦑ2¨cos(஻AC)±dKg-3-74C}☢4ᑗᡠᡂ¾2V2ᦑ2¨sinO=cos{n,A஺)ᑣ4c}☢4®ᡠᡂḄab¿.32.᝞1,ᙠABCD,£ᑖABACḄ஺OEḄA8=AC2ÁBC=4.«AHC¬OEᢚ¢ᑮAOEḄ¥¦§¨☢4஺☢8஺£஺᝞2.(1)PAO±BD@X(2)AC}☢ABOᡠᡂḄab.

8ூ#ᫀ௃1%᪆@2,.3ூ%᪆௃1ÂA஺.1AB=ACDEᑖABACḄA£>=AE,ᓽ஺OEḄ•.AO^OE.☢A஺Á☢8CEO,´☢4OE☢BCEE>=DE,4஺Ã☢4஺ÄA஺☢BCEDBDu☢BCED.A.OYBD.
28cGÂ஺GᑣOG_L£>£.ᵫ1"234஺_L☢BCEDOGu☢BCED-.4஺DE,A0_LOG.4஺jᑖ4OG,OE,OAᡠᙠÅmஹ>mஹzmp=0,_1,-2"4஺=2,2,-2",,஺|=2.

97☢ABDḄºᔣ¼஻=(x,y,z)tn-A,B=02x—2y—2z=0,>τi(—ᑣÌᓽ½'eÍz=lᑣy=-2,x=-l,d.஻=(1,2,1)Î?|=6.஻ᵨ0=0[-y-2z=0v7117AC}☢A3஺ᡠᡂḄ஺ᑣÐD"CÒ᪗=|ÄÓÔᡠ44c}☢ÕÖ஺ᡠᡂḄab2×.33.ᙠØA8COAB=3,AD=2,£9ÙCO☠Û஺ḄÜᑖ9ÙA஺ḄÜÝ´஺ᔆ=ß04(0(/1à1).᝞«ABCE¬5Eᢚ¢áA/BEG,§¨☢8EG☢ABED.(1)â2=ãPEFBG2(2)9ᔲåᙠ2,§¨G☢OEGᡠᡂḄḄabg?åᙠBXḄb@æåᙠçèᳮᵫ.ூ#ᫀ௃(1)%᪆(2)2=:2ூ%᪆௃(1)âa=éã9AOḄ.2/.DF=-AD=i,DE^-CD=\.23

10•ZADC=90°.ZDEF=45஺.--CE=-CD=2,BC=2,ZBCD=90°,3ZBEC=45°.BE±EF.☢GBE_L☢ABED☢GBEc☢ABED=BEEFu☢ABED£/_L☢5EG.VBGu☢BEG,-.EFA.BG.(2)4CjC£>,C8ḄêᔣÅm>mḄêᔣp<᝞ᡠqrᙶ᪗ugz.ᑣE(2,0,0),£>(3,0,0),*3,24,0).6EḄ஺•:GE=BG=2,-.GO1BE᧕¨06☢8஺Á,*BE-2V21,,,OG-V2,LV2j.AFG=(-2,1-22,72),EG=(-1,1,72),DG=(-2,1,V2),7☢OEGḄܺᔣ¼஻=(x,y,z),

11n-DG--2x+y+V2z=0,ᑣீn-EG=-x+y+yflz=0,0z=®,ᑣ஻=᎔,2,".7FG☢DEGᡠᡂḄ஺ᑣsineTcosFG,“|-2x0+(-2)x(1-22)+2|iV6x^6+(l-22)23'17%¨4=ᡈ2=——(îï)210åᙠðᦪ@I,§¨஺G☢DEGᡠᡂḄḄab,òã;1=1.324.᝞ᙠST49C-4AG/6C9;ó6Ḅ;D,£ᑖ44,Ḅ.(1)P4᜛/☢õG@(2)☢6G0CᡠᡂḄ`ab*3.ö☢ᱥGᡠᡂḄab.4ூ#ᫀ௃(1)°%᪆@(2)120

12ூ%᪆௃(1)P□ḄÂ᜜@EF,YEBC,.EF//CC,,EF=-CC.2•.•஺ḄDA//CC,DA=^CC,tt/•EF//DA,EF=DAz;A9úûz;J.AE//DF,,AEU☢BDCஹ,DFu☢üG,.•"£஻☢BDCஹ(2)ᵫ(1)þ⚪723BC,EA,ÿ
ᚖᑣ£ᙶ᪗EC,EA,"■ᡠᙠᑖxyz᝞ᡠḄᙶ᪗AA=2t(r>0),ᑣB(-3,0,0),C,(3,0,2t),A(0,373,0),C(3,0,0),£)(0,3A/3,r),ᡠBO=(3,J),Be1=(6,02),AC=(3,—34,0),BC-AC_6x3_V3}ᦑ|cos|=\BC,\-\AC\<+ফy#2+(_3@24BCf=J5,F☢BDC\ḄHᔣJm-(x,y,z)m•BD=03x+3>/3y+>/3z=0CKm-BC=06x+2>/3z=0X

13Mx=l,ᑣ஻?=(1,0,-6),PD
0,32ED=
0,3ḕRED-m___________-3V30ᡠcos=\ED\\m\A/(3A/3)2+(V3)2Jl+(-V3)2^6-)STF☢UVᡠᡂe/anᑣsin6=|cos|=——20TF☢XᡠᡂḄYZ[ᡃ.207t15.᝞^_┵P—ABC஺bAPLF☢PC஺AD//BC,NDAB=—AP=AB=BC=-AD,22£ADḄbACTẑde0.

14(I)fghP01F☢ABC஺i(IDfABTF☢PjᡠᡂḄYZ[.ூlᫀ௃(I)opB᪆i(II)*.ூB᪆௃I)ᵫstF☢PC஺uCAPJ.PC,APA.CD,ᵫ⚪wCA3CDxy᝞ᡠBCPDE,ᡠ8CDEFz^{yᡠᡠAPLBE.P|M_LAC}ACAP^A,ᡠ8E1☢APC,ᦑBE4PO.ᙠxybAC=^AB=®P|AP_LiUPCDᡠAPLPCᡠP4C~Ὺy஺{ACḄb,ᡠPOLAC.}ACIBE=O,ᡠPO_LF☢ABC஺(II)Hh஺ᑖO8,OC,OPxzḄᙶ᪗.

1550=14(0,—1,0),8(1,0,0),(0,0,1),£>(-2,1,0),஻=(x,%Z)F⊈PBDḄHᔣJ.n-PB-0n-BD=Q—x+z=0ᡠ—3x+y=0ᑣM=1BC=(1,3,1).AI7R\U஻|21\/XM11Hh(~HfAᑮF☢Ḅ)^A-PBD=VP-ABDAB=1¡uCPF=1PD=6BD=45SNBD=*~—xS^x/z=—xS^xPO,APAHDBC¢=211sin^=—=—AB11

16DABூ⚪¦☢௃1.᝞Fz^{yA3COᡠᙠF☢TxyA3EFᡠᙠF☢
ᚖ}AB=BE=-AF=l,BE//AF,A8_LA/,/CBA=2,BC=2,b.23(1)f§☢ZMTPEᡠᡂḄh(2)fF☢஺ᡠTF☢ABCDᡠᡂḄ☢(┦)Ḅ©Z[.ூlᫀ௃(1)—(2)—65ூB᪆௃

17DzI,*zA71ᙠAABCbAB=1,NCBA=—,BC=2,3ᡠAC2=BA2+BC2-2BAxBCcosZCBA=3ᡠAC2+BA2=8஺2,ᡠASj_A஺P|F☢ABC£)_LF☢¬ᡠF☢ABCDcF☢A3ᡠ=4BACuF☢ABC஺ᡠAC_LF☢A3Ẇ᝞°ᙶ᪗{AB,A£4C},ᑣপDA=(1,0,-V3),PE=(^,0,DA-PE.3—´§☢ZMTPEᡠᡂḄaᑣcosa=µ¶▀2xg2ᐔᡠ§☢¹DATPEᡠᡂḄ-i6(2)A=(0,2,0)F☢A5CDḄºHᔣJ,F☢ḄºHᔣJ஻=(x,y,z),DE=(2,1,-V3),DF=(1,2,->/3)

18n•DE=(x,y,z)•(2,1,-¹)=2x+y—>/3z=0n-DF=(x,yz)T(1,2,—g)=x+2y-&z=09Cz=>/3x=6y,»x=1,ᑣy=1,z=5/3,ᦑ஻=(1,1,6)F☢஺4Ḅ•ºHᔣJF☢஺£½TF☢A3COᡠᡂḄ☢(┦)ᵨ_AFnIτ2ᑣcosB-τ——τ=-----7==——.|AF|x|n|2xV552.᝞xyABCSbAS//BC,AB±BC,A8=BC=¿AS=2,DஹEᑖSCḄb2ÀÁASCDÂCOÃᢚᑮAPCDÅÆÇ8=24(1)gÈh&5_1_☢438i(2)f☢É89-஺ḄF☢ḄYᑗ[i(3)fTF☢3OEᡠᡂḄḄYZ[.ூlᫀ௃(1)gÈpB᪆i(2)E(3)3ூB᪆௃(1)xyA5CSbAS//BC,AB1BC,AB=BC=ËAS=2,DஹEᑖSCḄ2b,

19DA=2,^{yABC஺Fz^{yABA.BC,AB=DA=2,BD=26,ᡠ^{y45C£>YÌyCDIDS,ᢚÍCDVDP,PD=2,P8=26ᙠyPBDbPD2+BD2=4+8=12=PB2.ᡠBDFDPCD,DBF☢ABCDᑁᩩdᡠÐ஺_1_☢ABC஺iÑ2RD4,OC,QP
ᚖ஺D4,£>C,OPᑖxஹzᙶ᪗᝞ᡠhᑣ£>(0,0,0),4(2,0,0),8(2,2,0),C(0,2,0),P(0,0,2),E(0,l,1)DB=(2,2,0),DE=(0,1,1),F☢BDEḄHᔣJn=(x,y,z)DBn-2x+2y-0y=-zᑣீBCKMZ=l,»஻=(1,—1,1)DE-n=y+z=0x=zᵫÑ1RutQDJjfiiABC஺»F☢ABCDḄHᔣJDP=
0,0,2cos(DP,—=—,'/73x23

20᪷Õyh☢£—8஺CḄF☢Ḅ©Z[~Tᡠ☢E-BD-CḄF☢ḄYᑗ[J5iÑ3RA3=Ñ0,2,0R,ᵫÑ2RuCF☢8DEḄHᔣJ஻=Ñ1,1,1RABTF☢ᡠᡂḄ஺sin6=cosGAB,nH=-2IV3ஹᔆ2x^33'ᡠABTF☢BOEᡠᡂḄḄYZ[—.33.᝞^_×bAD//BC,ABA.AD,A£>=A6=2BC,4஺Ḅb.Ñ1RgÈhGM//F☢A4f16iTTÑ2RÙ^{yÚy}☢AABjBJ.☢ABC஺f☢A-jÛḄ©Z[.ூlᫀ௃Ñ1RgÈpB᪆iÑ2RூB᪆௃Ñ1R»4AḄbMÜÝMN,BN,

21“IBC•••WA஺ḄbMN//AO}MN=gA஺P3C//AO,BC=-AD,ᡠM7V//BC}A»V=3C2ᡠ^{yMNBCFz^{yß

22/ABADAPᡠᙠᑖx,y,zᙶ᪗A-AZ(᝞ᡠ)AB=4.ᑣAÑ0,0,0R,7
0,4,0R,CÑ4,2,0R,,3«,MÑ-1,2,V3R,4MCM=
-5,0,^,AC=Ñ4,2,0RF☢ACMḄHᔣJá=(x,y,z),\M=0Cx+2y-y/3z=0ᵫVm-CM=0-5x+¹z=0(LuCF☢ACMḄºHᔣJâ=1,2ஹF☢ACMḄHᔣJ஻=(᳝,y,zj.n-AC=Q14%+2%=0C4rnCM-0[-5%]+V3Z]=0uCF☢ACMḄºHᔣJ஻..cos
m,n2ᡠ☢4—CM-AḄ©Z[.

234.stFz^{yABC஺bNA=60°,AB=2AD=2,F☢AEE,F☢ABCDyAED~{yEF//AB.ÑIRfghF☢äR1•F☢A£»iÑIIRÙ8CF☢জf§☢BFTE஺ᡠᡂḄ©Z[;ঝf☢3—OF—CḄYZ[.ூlᫀ௃Ñ1RpB᪆iÑIIRজéiঝé.45ூB᪆௃ÑIRFz^{yABCDbVZA=60°.AJB=2AD=2^ᵫ©ZêᳮuC80=6ᵫìíêᳮuC50,AO,᝞,Dᙶ᪗஺ᑮz

24...0(0,0,0),A(l,0,0),B(0,V3,0),Ei°îJC(T,G,0)/.=(0,73,0),214=(1,0,0),DE=-,0,—•••DBDA^O'DBDE=G-,DBLDADBLDE.ïZMc£>£=£>,05_LF☢.PiDBuF☢BOE.••F☢BDF1F☢AED.(II):E/஻AB•,♦E/=XA8==(-4¹40)(1r-ULB1:F——2,v3/l,——,BC=(—1,0,0).(22)=0.A2=-.22…NG6Gðñ(1ñTI22JI22J3/.cos3=cos(BF,ED\='/ᒹ4.•.§☢BFTEDᡠᡂḄ©Z[^.4n-DB=y/3y=0ঝ஻=(x,y,z)F☢5£ḄHᔣJ,ᑣ஻.஺ó3ô´Z.஺22

25uC”=(1,0,0),m-DC--x+6y=0ö=(x,y,z)F☢CDFḄHᔣJᑣ(6Gm-DF=——vHz=02-2uCá=(G,1,—1),./\V3V15.஺÷..cos{m,n)=—j==-----,sin8=------'/455☢B-OF-CḄYZ[ø.55.᝞ᙠ^_┵P—ABC஺bùtB4_LF☢A8CO,}^{yABC஺xy,TTNABC=NBAD=—,PA^AD^l,AB=BC=1.2BC(1)fF☢Q46TF☢CDᡠᡂ┦☢Ḅ©Z[i(2)஺ú8PḄûîCQTᡠᡂḄᨬðýfú8஺Ḅþ.ூlᫀ௃প᧧ফ
35ூ᪆௃:᝞ᡠḄᙶ᪗Axyz,ᑣᔜ#Ḅᙶ᪗5(l,0,0),C(l,l,0),D((),2,0),P(0,0,2).

26(1)'AO_L(☢Q46,ᡠ*+(☢Ḅ,-.ᔣ0130=(020).'PC=(1,1,-2),PD=(0,2,-2).2(☢3CDḄ.ᔣ0m=(x,y,z),ᑣPC=0,m-PD=0,x+y-2z=0ᓽ5y=1,6z=l,x=l.2y-2z=0ADmV3ᡠm=(1,1,1)+(☢PCDḄ,-.ᔣ017*cosீAO,/wு=|AD||m|~Tᡠ(☢R43;(☢PCDᡠᡂ=☢Ḅ>?@—3(2)'BP=(T,0,2),28Q=46P=(-/l,0,2/l)(04/lW1),CB=((),-!,()),ᑣCQ=CB+BQ=(-2,-1,22)EF=((),,2,2),CQDP_1+2A7*cosீCQ,£)Pு\CQ\\DP\~^OA2+22l+22=//w[l,3}

27ᑣcoS1DPு=LM(22010,H------9NOPN1=|,ᓽR=|S1|cosீCQ,OPு|Ḅᨬᜧ@ᘽ.'y=cosxᙠ_o,5)a+bcᦪ1eSfCQ;஺pᡠᡂi6ᨬj@.k'l=m=n1ᡠS=|o=p6.᝞1ᙠr┵S-ABCv1SA=AB=AC=BC=0SB=J^SC,0BCḄv#(1){|}SO,(☢ABC(2)ᙠfABa+ᔲᙠ,#E,=☢B—SC-EḄ(☢Ḅ>?@ᙠ1{Ḅ@,5BAᙠ1ᳮᵫூᫀ௃1᪆2!3ூ᪆௃1,:SB=SC஺BCḄv#1...SO,BC1[72SB—a>ᑣSO--a>AO=—a

28(2)0#10Aᡠᙠfx10Bᡠᙠfy,OSᡠᙠfzᙶ᪗.ᑣᨵ0(0,0,0),S0,0,,CᎷ2ᙠ#Eᩩ¡12=ᑣE(¢£la,¤a(l—2),0,f/2/yAᑣCE=^-2«,^-a(2-2),0.2(☢SCEḄ.ᔣ0஻=(x,y,2),ᵫ¦3°,6©x+(2T))'=°,ᦑ«i஻=(2T,g,¬.n-SC=0y+z=0\)᧕6(☢SBCḄ,-.ᔣ0஻2=(1,0,0).®\m-n\2-/1J102ᡠ1cos^=-----=—f===----,64=—ᡈ4=,2(°)±¦|஻|V7/l2-4A+453ᡠ1N²=³S1=☢3-SC-EḄ>?@´.BA357T7.ᙠ᝞ᡠḄRµ¶v1·¸¹A8GD+¹1·¸¹AOPQ+º¹1PD//QA,ZPDA=-,2(☢ADPQ_L(☢A8CD1OAO=PO=2QA=2.

29I{|}Q8஻(☢PDC£
II{=☢C-PB-QḄᜧj£
III»¼#”ᙠrPDa1O¾☢fAH;PBᡠᡂḄ>?@¿1{f஺஻ḄÀ.155773ூᫀ௃1|᪆£2;£362ூ᪆௃1(☢ADPQ1(☢ABCD.(☢AOPQc(☢ABC஺=ADÁ஺Â(☢4஺Á஺1PDA.ADf©஺,(☢ABCD.ᵫ⚪Ä1:஺1ᑖÆD4,OC,OPḄᔣx1y1zḄᔣ᝞ᙶ᪗,ᑣ«6}D0,0,0,52,2,0,C0,2,0,A2,O,O,02,O,1,PO,O,2.Ç⚪Ä1᧕|}4஺=,2,0,0+(☢3஺஺Ḅ,-.ᔣ01E஺8=0,2,-1,=QBAO=01Ef(☢©஺஺1஺8//(☢□஺.(2)PB=(2,2-2),PC=(0,2,-2).

3024=
%,y,zj(☢PBCḄ.ᔣ0,nPB=02%1+2y-2Z]=0ᑣÉᓽ.%.pc=o2yt—2Zj=0Ê24=1,«6q=0,1,1.2%=/,%,Z2(☢P8QḄ.ᔣ0,EPB=2,2,—2,PQ=2,0,—1,%•P8=02X2-Z2=0ᑣ21ᓽÉ«2PQ=02X2+2y2-2z2=0Ê2Z2=2,«6%=
1,1,2,q•%,3..cos^,^>=,,,ÍÎ2E=☢C-PB-QÏ=☢157r.•=☢C,9,QḄᜧj=.6
32”0,0M0KHO2,ᑣA஻=
—2,0ಘ1EÇ=2,2,—2,ᓽ3n=¿k|cos|=7g2V3-V4+//215386/72-25/1+24=0.6஻ᡈ"=—°Ó.233ᦑᡠ{fDHḄÀ2

318.»¼ᙠ·r┵C—ABDEv1DB1(☢ABC,AE//D3,ABC+¸À2ḄÕ¸¹1AE=11FABḄv#.1{|}CMVEM-,2fDM;(☢ABCᡠᡂḄᑗ@2,{=☢B—CD-nḄᜧj.ூᫀ௃1|᪆£290.ூ᪆௃1|}48cÕ¸¹1"A3Ḅv#1•••CMLABkD?_L(☢ABC1CMu(☢ABC,=DB_LCM1DBAB=B,DB-ABi(☢ABOE,..CM1(☢ABOE1kEMu(☢ABDE1£•OW■!EM.2Þ#Mßà//BO1᧕¼AfeஹMBஹMCääᚖ;

32M#1ᑖÆMCஹMBஹçßXஹyஹZᙶ᪗1᝞;(☢ABC11ZDMBHfDM;(☢ABCᡠᡂ,BD-.tanZDMB=——=2,BD=2BM=21BM.í.5(0,1,0),C(V3,0,0),£>(0,1,2),£(0,-1,1),/.BC=(V3,-l,0),CD=(-73,1,2),CE=(-V3,-1,1),2(☢BCDḄ•-.ᔣ0ò=X³1x1zJ,m-BC=0,5X=l,ᑣ᪷=(1,6,0),ᑣÉᓽm-CD=0q+%+2Z]=02(☢CDEḄ,-.ᔣ0஻=ø21%1221f-2=஺15/=Gᑣ஻=(&T2),nCE—0ᑣÉᓽÉn-CD=QV3X+%+2Z=022m-n..COS1ü=|)j-j=0rrM==☢5,EḄᜧj90.