Title: ??3?A,B,C????????ABC????,????????????????????????
1???????3??????????????????????????????
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3?????
???????3?????????,???????????????????
??3?A,B,C????????ABC????,????????????????????????
4????????????????
- ??????????????????????,???????????????????????
????????????????????????,????????????????????????
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5??????????????
- ?2????????L?,??2????????????L?????????????????????
??????? (??????????????? ????????)
6????????????
- ????? xyk ????,?????2??A,D????
- ???????2??P,Q????,????????,
- ??(PA) -??(PD)
- ??(QA) -??(QD)
- ???????,?PAQ ?PDQ ??????
- (??????????????? ????????)
7????
??????????????????? ??????????3?A,B,C???,?ABC????
????? ??A????????????D(-A)????????,??B???????????
??,??AC?x???????d????, ?BAC-?BCA?CBD2d(?) ????
???????,?? ?????????????? ????
8????????
????,?BACa,?BCAß,?CBDe???? ?B???x???????l????,?
A??????A????, ????????????????,
??(AB)-??(BD) ???,??AB?BD???l????????????,?A???B
D????? ???, ?BAB ?BABa ??,
?BABae ??AC?x???????d????,
?ABC2d ??, ß2dae ???, a-ße
2d(?) ???,2d?A,C??????? ????????,
a-ße?? ???????
9????? ??????????P????, fAC(P)?PAC-?PCA ???????
, fAC(B) fAC(H)????H?,?????????B???1?????????????
??????,?BAH?BCH(?)??????
10????????
??B??H????,(?)??? fAC(B) fAC(H)
????CBD?CHD???????? ?????,??B??H????, a-ß 2d-e
(?) ?, fAC(B)2d-?CBD fAC(H)2d-?CHD ????,2d
??A,C???????????????, ? fAC(B) fAC(H)
????CBD?CHD? ??,??B????,?BCD????????,?????????B
,C,D???1?????? ????H????,????????,
?CBD?CHD ???, fAC(B) fAC(H) ????,
?BAC-?BCA?HAC-?HCA ???, ?BAH?BCH(?)
????????
11??????????ABC??????????????????
?????????????ABC????,??A????????????D(-A)????
????,?BCD?????????4????????B,C,D?????H????,
???????, ?BAH?BCH? ??B?C?????????????,
?CAH?CBH ? ??AH?BC,??BH?AC,??CH ?AB????,????L
,M,N? ??? ????????????,4?A,M, L,B?????????? ???,??
??????????, ?BAL?BML?HML?HCL ???,4?L,C,M,H?,??
?? ????,?????????LCMH???????, ?HLC?HMC180?
12??, ?ABL??CBN (???2???) ?AHM??BHL(???2???) ??,
?ALB?CNB?BMA? ???, ?HLC?HMC? ?,???,?HLC
?HMC90 ???,AL?BC,BM?AC,?? ?CN?AB?????,?H??ABC
??????? ????,??????????ABC????,?,??????H? ??????
???1?????,?H??ABC????????,?? ????????ABC????,?????
???????
?????
13?????????
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?????(2?) ??????????,??,??,?????? ?????????????
?,???????????
???????????????????????????
????????????????,??????????????
????????????????? ?????????????????????????,????
? ???????,???????????????????????
??????????????,????????????,??
????!??????????,???????????? ???????????????????
?? ?????????????????,????????????? ????
14??????
??????????????????????????,??????????????????????
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???? ???????????????? ????????,?????????????????,?
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