1
2019-2020
瀛﹀勾楂樹腑鏁板閫変慨
2-2
绗?/p>
1
绔?/p>
銆婂鏁板強鍏跺簲鐢ㄣ�嬫祴璇曞嵎
(
鏃堕棿
:90
鍒嗛挓
婊″垎
:120
鍒?/p>
)
涓�銆侀�夋嫨棰?/p>
(
鏈ぇ棰樺叡
10
灏忛
,
姣忓皬棰?/p>
5
鍒?/p>
,
鍏?/p>
50
鍒?/p>
.
鍦ㄦ瘡灏忛缁欏嚭鐨勫洓涓�夐」涓?/p>
,
鍙湁涓�椤规槸绗﹀悎棰?/p>
鐩姹傜殑
)
1.
宸茬煡鍑芥暟
f
(
x
)
=ax
涓?/p>
f'
(4
鍒?/p>
a
鐨勫�肩瓑浜?/p>
(
)
A
瑙ｆ瀽
:
鐢卞凡鐭ュ緱
f'
(
x
)
=a
鍒?/p>
f'
(4)
=a
瑙ｅ緱
a
绛旀
:
D
2.
鏇茬嚎
y
-
鍦ㄧ偣
1,
-
1)
澶勭殑鍒囩嚎鏂圭▼涓?/p>
(
)
A.2
x+y-
1
=
0
B.2
x-y-
3
=
0
C.2
x-y+
1
=
0
D.2
x+y-
3
=
0
瑙ｆ瀽
:
鍥犱负
y'
-
-
鎵�浠ュ垏绾跨殑鏂滅巼
k
-
-
鎵�浠ユ墍姹傚垏绾挎柟绋嬩负
y+
1
=-
2(
x-
1),
鍗?/p>
2
x+y-
1
=
0
.
绛旀
:
A
3.
鍑芥暟
f
(
x
)
=
3
x
2
+
ln
x-
2
x
鐨勬瀬鍊肩偣鐨勪釜鏁版槸
(
)
A.0
B.1
C.2
D.
鏃犳暟涓?/p>
瑙ｆ瀽
:
鍑芥暟
f
(
x
)
鐨勫畾涔夊煙涓?/p>
(0,
+
鈭?/p>
),
涓?/p>
f'
(
x
)
=
6
x
-
鍥犱负
x>
0,
g
(
x
)
=
6
x
2
-
2
x+
1
涓?/p>
螖
=
(
-
2)
2
-
4
脳
6
脳
1
=-
20
<
0,
鎵�浠?/p>
g
(
x
)
>
0
鎭掓垚绔?/p>
,
鏁?/p>
f'
(
x
)
>
0
鎭掓垚绔?/p>
,
鍗?/p>
f
(
x
)
鍦ㄥ畾涔?/p>
鍩熶笂鍗曡皟閫掑
,
鏃犳瀬鍊肩偣
.
绛旀
:
A
4.
宸茬煡鍑芥暟
f
(
x
)
鐨勫鏁?/p>
f'
(
x
)
=a
(
x+
1)(
x-a
),
涓?/p>
f
(
x
)
鍦?/p>
x=a
澶勫彇寰楁瀬澶у�?/p>
,
鍒欏疄鏁?/p>
a
鐨勫彇鍊艰寖鍥存槸
(
)
A.(
-
1,
+
鈭?/p>
)
B.(
-
1,0)
C.(0,1)
D.(1,
+
鈭?/p>
)
绛旀
:
B