鐏胯嫢瀵掓槦鍒朵綔
鐏胯嫢瀵掓槦鍒朵綔
涓�鍏冧簩娆℃柟绋?/p>
鍗曞厓娴嬭瘯鍗?/p>
鏃堕棿
:120
鍒嗛挓
婊″垎
;120
鍒?/p>
涓�銆侀�夋嫨棰橈紙姣忛
3
鍒嗭紝鍏?/p>
30
鍒嗭級
1
锛庡凡鐭?/p>
x=1
鏄竴鍏冧簩娆℃柟绋?/p>
x
2
-2mx+1=0
鐨勪竴涓В锛屽垯
m
鐨勫�兼槸锛?/p>
锛?/p>
A
锛?/p>
1
B
锛?/p>
0
C
锛?/p>
0
鎴?/p>
1
D
锛?/p>
0
鎴?/p>
-1
2
锛庡凡鐭?/p>
a
銆?/p>
b
涓轰竴鍏冧簩娆℃柟绋?/p>
0
9
2
2
飥?/p>
飥?/p>
飥?/p>
x
x
鐨勪袱涓牴锛?/p>
閭ｄ箞
b
a
a
飥?/p>
飥?/p>
2
鐨勫�间负锛?/p>
锛?/p>
锛?/p>
A
锛?/p>
-7
锛?/p>
B
锛?/p>
0
锛?/p>
C
锛?/p>
7
锛?/p>
D
锛?/p>
11
3
锛庢牴鎹笅鍒楄〃鏍间腑浜屾鍑芥暟
2
y
ax
bx
c
飥?/p>
飥?/p>
飥?/p>
鐨勮嚜鍙橀噺
x
涓庡嚱鏁板�?/p>
y
鐨勫搴斿�硷紝鍒ゆ柇鏂圭▼
2
0
ax
bx
c
飥?/p>
飥?/p>
飥?/p>
锛?/p>
0
a
a
b
c
飩?/p>
锛?/p>
锛?/p>
锛?/p>
涓哄父鏁帮級鐨勪竴涓В
x
鐨勮寖鍥存槸锛?/p>
锛?/p>
x
6.17
6.18
6.19
6.20
2
y
ax
bx
c
飥?/p>
飥?/p>
飥?/p>
0.03
飥?/p>
0.01
飥?/p>
0.02
0.04
锛★紟
6
6.17
x
飥?/p>
飥?/p>
锛紟
6.17
6.18
x
飥?/p>
飥?/p>
锛ｏ紟
6.18
6.19
x
飥?/p>
飥?/p>
锛わ紟
6.19
6.20
x
飥?/p>
飥?/p>
4
锛庣瓑鑵颁笁瑙掑舰鐨勫簳鍜岃叞鏄柟绋?/p>
x
2
-6x+8=0
鐨勪袱鏍癸紝鍒欒繖涓笁瑙掑舰鐨勫懆闀夸负锛?/p>
锛?/p>
A.8
B.10
C.8
鎴?/p>
10
D.
涓嶈兘纭畾
5
锛庢煇鍩庡競
2007
骞村簳宸叉湁缁垮寲闈㈢Н
300
鍏》锛岀粡杩囦袱骞寸豢鍖栵紝缁垮寲闈㈢Н閫愬勾澧炲姞锛屽埌
2009
骞村簳澧炲姞鍒?/p>
363
鍏》锛庤缁垮寲闈㈢Н骞冲潎姣忓勾鐨勫闀跨巼涓?/p>
x
锛岀敱棰樻剰锛屾墍鍒楁柟绋嬫纭殑鏄?/p>
A
锛?/p>
300(1
锛?/p>
x
)=363
B
锛?/p>
300(1
锛?/p>
x
)
2
=363
C
锛?/p>
300(1
锛?/p>
2
x
)=363
D
锛?/p>
363(1
锛?/p>
x
)
2
=300
6
锛?/p>
鐜板畾涔夋煇绉嶈繍绠?/p>
(
)
a
b
a
a
b
飪?/p>
飥?/p>
飥?/p>
锛?/p>
鑻?/p>
2
(
2)
2
x
x
x
飥?/p>
飪?/p>
飥?/p>
飥?/p>
锛?/p>
閭ｄ箞
x
鐨勫彇鍊艰寖鍥存槸
锛?/p>
锛?/p>
锛?/p>
A
锛?/p>
1
2
x
飥?/p>
飥?/p>
飥?/p>
锛?/p>
B
锛?/p>
2
x
飥?/p>
鎴?/p>
1
x
飥?/p>
飥?/p>
锛?/p>
C
锛?/p>
2
x
飥?/p>
锛?/p>
D
锛?/p>
1
x
飥?/p>
飥?/p>
7
銆佸凡鐭?/p>
a
b
锛?/p>
鏄叧浜?/p>
x
鐨勪竴鍏冧簩娆℃柟绋?/p>
2
1
0
x
nx
飥?/p>
飥?/p>
飥?/p>
鐨勪袱瀹炴暟鏍癸紝鍒欏紡瀛?/p>
b
a
a
b
飥?/p>
鐨勫�兼槸
锛?/p>
锛?/p>
A
锛?/p>
2
2
n
飥?/p>
B
锛?/p>
2
2
n
飥?/p>
飥?/p>
C
锛?/p>
2
2
n
飥?/p>
D
锛?/p>
2
2
n
飥?/p>
飥?/p>
8
銆佺敤閰嶆柟娉曞皢浠ｆ暟寮?/p>
a
2
+4
a
-
5
鍙樺舰锛岀粨鏋滄纭殑鏄紙
锛?/p>
A.(
a
+2)
2
-
1
B. (
a
+2)
2
-
5
C. (
a
+2)
2
+4
D. (
a
+2)
2
-
9
9
銆佸叧浜?/p>
x
鐨勪竴鍏冧簩娆℃柟绋?/p>
2
2
2
3
1
0
x
x
a
飥?/p>
飥?/p>
飥?/p>
飥?/p>
鐨勪竴涓牴涓?/p>
2
锛屽垯
a
鐨勫�兼槸锛?/p>
锛?/p>
A
锛?/p>
1
B
锛?/p>
3
C
锛?/p>
3
飥?/p>
D
锛?/p>
3
飩?/p>
10
銆?/p>
鏌愬晢鍝佺粡杩囦袱娆¤繛缁檷浠凤紝
姣忎欢鍞环鐢卞師鏉ョ殑
55
鍏冮檷鍒颁簡
35
鍏冿紟
璁惧钩鍧囨瘡娆￠檷浠风殑鐧?/p>
鍒嗙巼涓?/p>
x
锛屽垯涓嬪垪鏂圭▼涓纭殑鏄紙
锛?/p>
A
锛?/p>
55 (1+
x
)
2
=35
B
锛?/p>
35(1+
x
)
2
=55
C
锛?/p>
55 (1
锛?/p>
x
)
2
=35
D
锛?/p>
35(1
锛?/p>
x
)
2
=55