2019
骞撮珮涓暟瀛﹀崟鍏冩祴璇曞嵎
骞抽潰瑙ｆ瀽鍑犱綍鍒濇
瀛︽牎锛?/p>
__________
濮撳悕锛?/p>
__________
鐝骇锛?/p>
__________
鑰冨彿锛?/p>
__________
涓�銆侀�夋嫨棰?/p>
1
锛?/p>
涓嬪垪鏂圭▼鐨勬洸绾垮叧浜?/p>
x=y
瀵圭О鐨勬槸锛?/p>
锛?/p>
A
锛?/p>
x
2
锛?/p>
x
锛?/p>
y
2
锛?/p>
1
B
锛?/p>
x
2
y
锛?/p>
xy
2
锛?/p>
1 C
锛?/p>
x
锛?/p>
y=1
D
锛?/p>
x
2
锛?/p>
y
2
锛?/p>
1
锛?/p>
2000
鍖?
浜畨寰芥槬瀛?/p>
4
锛?/p>
2
锛?/p>
濡傛灉鐩寸嚎
l
灏嗗渾
x
2
+y
2
锛?/p>
2x
锛?/p>
4y=0
骞冲垎锛屼笖涓嶉�氳繃绗洓璞￠檺锛岄偅涔堢洿绾?/p>
l
鐨勬枩鐜囩殑鍙栧�?/p>
鑼冨洿鏄紙
锛?/p>
A
锛庯蓟
0
锛?/p>
2
锛?/p>
B
锛庯蓟
0
锛?/p>
1
锛?/p>
C
锛庯蓟
0
锛?
2
1
锛?/p>
D
锛庯蓟
0
锛?
2
1
锛夛紙
1997
鍏?/p>
鍥芥枃
9
锛?/p>
3
锛?/p>
鐩寸嚎
l
涓庡渾
2
2
2
4
0,(
3)
x
y
x
y
a
a
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
鐩镐氦浜?/p>
,
A
B
涓ょ偣锛岃嫢寮?/p>
AB
鐨勪腑鐐逛负
(
2,3)
飥?/p>
锛屽垯鐩寸嚎
l
鐨勬柟绋嬩负
( )
A
锛?/p>
3
0
x
y
飥?/p>
飥?/p>
飥?/p>
B
锛?/p>
1
0
x
y
飥?/p>
飥?/p>
飥?/p>
C
锛?/p>
5
0
x
y
飥?/p>
飥?/p>
飥?/p>
D
锛?/p>
5
0
x
y
飥?/p>
飥?/p>
飥?/p>
4
锛?/p>
a=1
鏄洿绾?/p>
y=ax+1
鍜岀洿绾?/p>
y=(a-2)x-1
鍨傜洿鐨勶紙锛?/p>
A
.
鍏呭垎涓嶅繀瑕佹潯浠?/p>
B
.
蹇呰涓嶅厖鍒嗘潯浠?/p>
C
.
鍏呰鏉′欢
D
.
鏃笉鍏呭垎涔熶笉蹇呰鏉′欢
浜屻�佸～绌洪
5
锛?/p>
璁?/p>
a
銆?/p>
b
銆?/p>
c
鍒嗗埆鏄柍
ABC
涓垹
A
锛庘垹
B
锛庘垹
C
鎵�瀵硅竟鐨勮竟闀匡紝鍒欑洿绾?/p>
sinA
路
x+ay+c=0
涓?/p>
bx
锛?/p>
sinB
路
y+sinC=0
鐨勪綅缃叧绯绘槸锛?/p>
锛?/p>
A
锛庡钩琛?/p>
B
锛庨噸鍚?/p>
C
锛庡瀭鐩?/p>
D
锛庣浉浜や絾涓嶅瀭鐩达紙
1998
涓婃捣锛?/p>
6
锛?/p>
鐩寸嚎
9
x
锛?/p>
4
y
=36
鐨勭旱鎴窛涓?/p>
__________.
7
锛?/p>
宸茬煡鐩寸嚎
0
7
4
2
:
1
飥?/p>
飥?/p>
飥?/p>
y
x
l
锛屽垯杩囩偣
)
7
,
3
(
A
涓斾笌鐩寸嚎
1
l
鍨傜洿鐨勭洿绾跨殑鏂圭▼鏄?/p>
.
8
锛?/p>
宸茬煡鐐?/p>
)
0
)(
,
(
飩?/p>
ab
b
a
M
鏄渾
2
2
2
:
r
y
x
C
飥?/p>
飥?/p>
鍐呯殑涓�鐐?/p>
,
鐩寸嚎
l
鏄互
M
涓轰腑鐐圭殑寮︽墍鍦?