/y0$1a
’
3ifA 31ifB 1
2
3
2?
fiB
2 =3 4
2 1
AB B3 |ABB3| ||
2?? ,%2AB3 2
ˉ* ( ) ,+( ) ,%ˉ* ˉ*,3 2^,%& #? = A33DK A3=AB+B3=39+D=9ˉ1+ 2^92 31+ 1^92
1 1ˉ^
ˉ*,#? ˉ* ˉ* ( , ) ˉ* 1 , ?+2=ˉ4!fiˉ* (,)(, ),0 %& % AD= 34 D3=A3ˉAD= B ?￥,+1==ˉ2 ￥￥
, ˉ1{
{, ?=ˉ4
A3=AB+AD A1= AB+AD DE= ABˉAD
3
2
ˉ*,ˉ* 2 ˉ* ˉ*,ˉ* 1 ˉ* ˉ*,#?ˉ*
ˉ*,)#? ’, = 2?+ 1￥‘ , ‘?=9 23 %&
ˉ*
D F
C
A1=?A3+
E B DE ￥
9
ˉ*=( 1 )ˉ* (
2
?+ ￥B+ ?ˉD A￥ A< =1L?ˉ￥,
? #? < 2?+￥ =ˉ, ￥L 9
◇
2
?ˉ4,#?4$flfi?+a&3#? 1ˉ3O3A =?3O3A,ifB=13if313O3A,= = 22 2?
2
Cfi \
3 B3 ,2 槡3 ,$flfi?+& A#? AB3=4◇ 2= 3=4◇ 2×× =
槡
if41’? 3if112◇? 3槡 2 槡2
?
) 3if(1ˉa9 A3 3& D a= () ifa1ˉ3if9 319(2’Q1ˉ’a)Q19
,
B fi
1
) 3if(1ˉa9
’Q1ˉ’Q1a ˉ* (ˉ*2 ˉˉˉ**2 ) *)ˉ*2
ˉ*2 9ˉ*2
,#?
BP B8= BT+TP BT+T8 =BT +BT TP+T8 ˉTP =BT ˉTP =BT ˉ1
2
FfiHfi ˉ* 2 ,?J ˉ* 2
2×2槡32 FfiHfi ()4
BP B8
BT 11 f1iˉ
BT 1f1i=
3ifB 31if31 3ifB 213ifB13O3B
2 , 2 ? , 3,’槡2@4#?%&3flf3==O3B=ifB= 槡11ˉ3O3B=
32 12@303O33=3O32B=23O3Bˉ1=2×()ˉ1=,if31 槡
23O3B
23
3槡’,
4 8
’槡)#?3ifA=13if(1B+3=3ifB13O33+3O3B3if31=
= 1ˉ3O3 = 1+ 8槡’ ’槡’ 3 3 4 4,!fia=$flfi?+ 4 = ? = a ,& 4 = ? = 1 ,%&41=,?=,
’ ’ 3ifB 31if31 3ifA 1槡’ 3槡’ ’槡’ #?*
= 1
1 4 43ifA=×1×
4 8 ’槡’ 3槡’ × =2 ’ ’14
),(
,%&
3
14 B3 AA42 ?
(
3 !fi
R
,
2 ?(-fifi4
3 3 槡槡) !fia,,#?3flP&槡3 3◇?3O3B+=?ifA13O3B+B=3if31=3if(1A+B)B= 4 3if 13if 12 2 2
2 4
槡
+D ?R ^+D= 1+2ˉ2^^槡2槡2^ RR+D R=1+2+2ˉ4=3ˉ2=◇ ^^^^
222=4?+?ˉ4?× 3 1 1槡’ 2,,,#??0*=2?=24=4=3ifA=×41×2×槡2槡2槡2槡2
(,),0(
ˉ* ,ˉ* ,3B
OA=R OB=DO3=3= 2◇
Rˉ3 Dˉ3 =3A
ˉ* ˉ*
R
ˉ*3A S :aa
, ˉ* F}Hfi’
2,, …………………………………………………………………………… 4y !fi#?9R=3ˉ4D=’||||
3槡3 …………………………………………………… 8y
3
山西高一答案 (1)
