1
鍔ㄦ�侀棶棰?/p>
涓�銆侀�夋嫨棰?/p>
1.
锛?/p>
2014鈥?/p>
瀹夊窘鐪?/p>
,
绗?/p>
9
棰?/p>
4
鍒嗭級濡傚浘锛岀煩褰?/p>
ABCD
涓紝
AB
=3
锛?/p>
BC
=4
锛屽姩鐐?/p>
P
浠?/p>
A
鐐瑰嚭鍙戯紝
鎸?/p>
A
鈫?/p>
B
鈫?/p>
C
鐨勬柟鍚戝湪
AB
鍜?/p>
BC
涓婄Щ鍔紝璁?/p>
P
A
=
x
锛岀偣
D
鍒扮洿绾?/p>
P
A
鐨勮窛绂讳负
y
锛屽垯
y
鍏充簬
x
鐨勫嚱鏁板浘璞″ぇ鑷存槸锛?/p>
锛?/p>
A
锛?/p>
B
锛?/p>
C
锛?/p>
D
锛?
鑰冪偣锛?/p>
鍔ㄧ偣闂鐨勫嚱鏁板浘璞★紟
鍒嗘瀽锛?/p>
鈶犵偣
P
鍦?/p>
AB
涓婃椂锛岀偣
D
鍒?/p>
AP
鐨勮窛绂讳负
AD
鐨勯暱搴︼紝鈶＄偣
P
鍦?/p>
BC
涓婃椂锛屾牴鎹悓
瑙掔殑浣欒鐩哥瓑姹傚嚭鈭?/p>
APB
=
鈭?/p>
P
AD
锛屽啀鍒╃敤鐩镐技涓夎褰㈢殑鍒楀嚭姣斾緥寮忔暣鐞嗗緱鍒?/p>
y
涓?/p>
x
鐨勫叧绯?/p>
寮忥紝浠庤�屽緱瑙ｏ紟
瑙ｇ瓟锛?/p>
瑙ｏ細鈶犵偣
P
鍦?/p>
AB
涓婃椂锛?/p>
0鈮?/p>
x
鈮?
锛岀偣
D
鍒?/p>
AP
鐨勮窛绂讳负
AD
鐨勯暱搴︼紝鏄畾鍊?/p>
4
锛?/p>
鈶＄偣
P
鍦?/p>
BC
涓婃椂锛?/p>
3
锛?/p>
x
鈮?
锛?/p>
鈭碘垹
APB
+
鈭?/p>
BAP
=90掳
锛?/p>
鈭?/p>
P
AD
+
鈭?/p>
BAP
=90掳
锛?/p>
鈭粹垹
APB
=
鈭?/p>
P
AD
锛?/p>
鍙堚埖鈭?/p>
B
=
鈭?/p>
DEA
=90掳
锛?/p>
鈭粹柍
ABP
鈭解柍
DEA
锛?/p>
鈭?
=
锛?/p>
鍗?/p>
=
锛?/p>
鈭?/p>
y
=
锛?/p>
绾佃鍚勯�夐」锛屽彧鏈?/p>
B
閫夐」鍥惧舰绗﹀悎锛?/p>