骞抽潰鍚戦噺鍩烘湰瀹氱悊澶囪�冪瓥鐣?/p>
涓绘爣棰?/p>
锛氬钩闈㈠悜閲忓熀鏈畾鐞嗗鑰冪瓥鐣?/p>
鍓爣棰橈細閫氳繃鑰冪偣鍒嗘瀽楂樿�冨懡棰樻柟
鍚戯紝鎶婃彙楂樿�冭寰嬶紝涓哄鐢熷鑰冨涔犳墦閫氬揩閫熼�氶亾銆?/p>
鍏抽敭璇嶏細骞抽潰鍚戦噺鐨勫熀鏈畾鐞嗭紝澶囪�冪瓥鐣?/p>
闅惧害锛?/p>
3
閲嶈绋嬪害锛?/p>
4
鍐呭锛?/p>
1
銆佸湪鍚屼竴骞抽潰鍐咃紝琛ㄧず鍚屼竴鍚戦噺鐨勫熀搴曟槸鍚︽槸鍞竴鐨?/p>
?
2
銆佽嫢鍩哄簳閫夊彇涓嶅悓锛屽垯琛ㄧず鍚屼竴涓悜閲忕殑瀹炴暟
1
2
,
飦?/p>
飦?/p>
鏄惁鐩稿悓銆?/p>
3
銆佸钩闈㈠悜閲忓熀鏈畾
鐞嗙殑搴旂敤
鎬濈淮瑙勫緥瑙ｉ
鑰冪偣涓�锛氬垽鏂悜閲忚兘鍚︿綔涓哄熀搴?/p>
渚?/p>
1
锛?/p>
鑻ュ悜閲?/p>
a
飦?/p>
锛?/p>
b
r
涓嶅叡绾匡紝
涓?/p>
2
,
3
2
c
a
b
d
a
b
飥?/p>
飥?/p>
飥?/p>
飥?/p>
r
r
r
u
r
r
r
锛?/p>
璇曞垽鏂悜閲?/p>
,
c
d
r
u
r
鑳藉惁浣滀负鍩哄簳锛?/p>
鑰冪偣浜岋細缁欏嚭鍩哄簳琛ㄧず鍏跺畠鍚戦噺
渚?/p>
2
锛氬钩琛屽洓杈瑰舰
ABCD
鐨勪袱鏉″瑙掔嚎浜や簬鐐?/p>
M
锛?/p>
涓?/p>
AB
=
a
飦?/p>
锛?/p>
AD
=
b
飦?/p>
锛岀敤
a
飦?/p>
锛?/p>
b
飦?
琛?
绀?/p>
MA
锛?/p>
MB
锛?/p>
MC
鍜?/p>
MD
銆?/p>
鑰冪偣
涓夛細
鏍规嵁骞抽潰鍚戦噺鍩烘湰瀹氱悊姹傚弬鏁扮殑鍙栧�?/p>
渚?/p>
3
锛氬凡鐭ュ悜閲?/p>
1
e
u
r
锛?/p>
2
e
u
u
r
涓嶅叡绾匡紝瀹炴暟
x
銆?/p>
y
婊¤冻
(3
x
-4
y
)
1
e
u
r
+(2
x
-3
y
)
2
e
u
u
r
=6
1
e
u
r
+3
2
e
u
u
r
锛屽垯
x
锛?/p>
y
鐨勫�肩瓑浜?/p>
_____
鑰冪偣鍥涳細涓嶅悓鍩哄簳涓嬪悓涓�鍚戦噺鐨勫潗鏍囪〃绀恒�?/p>
渚?/p>
4
锛氳嫢
,
飦?/p>
飦?/p>
u
r
u
r
鏄竴缁勫熀搴曪紝鍚戦噺
x
y
飦?/p>
飦?/p>
飦?/p>
飥?/p>
飥?/p>
r
u
r
u
r
(
x
锛?/p>
y
鈭?/p>
R
)
锛屽垯绉?/p>
(
x
锛?/p>
y
)
涓哄悜閲?/p>
飦?/p>
r
鍦?/p>
鍩哄簳
,
飦?/p>
飦?/p>
u
r
u
r
涓嬬殑鍧愭爣锛岀幇宸茬煡鍚戦噺
a
r
鍦ㄥ熀搴?/p>
p
u
r
锛?/p>
(1
锛?/p>
锛?/p>
1)
锛?/p>
q
r
q
锛?/p>
(2,1)
涓嬬殑鍧愭爣涓?/p>
(
锛?/p>
2,2)
锛?/p>
鍒?/p>
a
r
鍦ㄥ彟涓�缁勫熀搴?/p>
m
u
r
锛?/p>
(
锛?/p>
1,1)
锛?/p>
n
r
锛?/p>
(1,2)
涓嬬殑鍧愭爣涓?/p>
(
)
A
锛?/p>
(2,0)
B
锛?/p>
(0
锛岋紞
2)
C
锛?/p>
(
锛?/p>
2,0)
D
锛?/p>
(0,2)