2019
涓�冩暟瀛﹀帇杞撮
1.(
鐪夊北
)
濡傚浘
1
锛屽湪骞抽潰鐩磋鍧愭爣绯讳腑锛屾姏鐗╃嚎
y
锛濓梗
9
4
x
2
+
bx+c
缁忚繃鐐?/p>
A
锛堬梗
5
锛?/p>
0
锛夊拰鐐?/p>
B
锛?/p>
1
锛?/p>
0
锛?/p>
.
锛?/p>
1
锛夋眰鎶涚墿绾跨殑瑙ｆ瀽寮忓強椤剁偣
D
鐨勫潗鏍囷紱
锛?/p>
2
锛夌偣
P
鏄姏鐗╃嚎涓?/p>
A
銆?/p>
D
涔嬮棿鐨勪竴鐐癸紝杩囩偣
P
浣?/p>
PE
鈯?/p>
x
杞翠簬鐐?/p>
E
锛?/p>
PG
鈯?/p>
y
杞达紝浜ゆ姏鐗╃嚎
浜庣偣
G.
杩囩偣
G
浣?/p>
GF
鈯?/p>
x
杞翠簬鐐?/p>
F.
褰撶煩褰?/p>
PEFG
鐨勫懆闀挎渶澶ф椂锛屾眰鐐?/p>
P
鐨勬í鍧愭爣锛?/p>
锛?/p>
3
锛夊鍥?/p>
2
锛岃繛鎺?/p>
AD
銆?/p>
BD
锛岀偣
M
鍦ㄧ嚎娈?/p>
AB
涓婏紙涓嶄笌
A
銆?/p>
B
閲嶅悎锛夛紝浣?/p>
鈭?/p>
DMN
锛?/p>
鈭?/p>
DBA
,
MN
浜ょ嚎娈?/p>
AD
浜庣偣
N
锛屾槸鍚﹀瓨鍦ㄨ繖鏍风偣
M
锛屼娇寰?/p>
鈻?/p>
DMN
涓虹瓑鑵颁笁瑙掑舰锛熻嫢瀛樺湪锛屾眰鍑?/p>
AN
鐨勯暱锛涜嫢涓嶅瓨鍦紝璇疯鏄庣悊鐢?/p>
B
A
C
O
D
E
F
G
P
y
x
鍥?/p>
1
鍥?/p>
2
A
B
C
D
y
x
M
N
O