搂3.4
鎸囨暟涓庢寚鏁板嚱鏁?/p>
鍩虹绡囧浐鏈く鍩?/p>
銆愬熀纭�闆嗚銆?/p>
鑰冪偣
鎸囨暟涓庢寚鏁板嚱鏁?/p>
1.
璁?/p>
a>0,
灏?
饾憥
2
鈭?/p>
饾憥
路
鈭?/p>
饾憥
2
3
琛ㄧず鎴愬垎鏁版寚鏁板箓鐨勫舰寮?/p>
,
鍏剁粨鏋滄槸
(
)
A.
饾憥
1
2
B.
饾憥
5
6
C.
饾憥
7
6
D.
饾憥
3
2
绛旀
C
2.
鍑芥暟
y=
(
1
2
)
饾懃
2
-
2x
鐨勫�煎煙涓?/p>
(
)
A.
[
1
2
,
+
鈭?/p>
)
B.
(
-
鈭?/p>
,
1
2
]
C.
(0,
1
2
]
D.(0,2]
绛旀
D
3.
璁惧嚱鏁?/p>
f(x)=x
2-a
涓?/p>
g(x)=a
x
(a>1
涓?/p>
a
鈮?/p>
2)
鍦ㄥ尯闂?0,+鈭?涓婂叿鏈変笉鍚岀殑鍗曡皟鎬?/p>
,
鍒?/p>
M=(a-1)
0.2
涓?/p>
N=
(
1
饾憥
)
0.1
鐨勫ぇ灏忓叧绯绘槸
(
)
A.M=N
B.M
鈮?/p>
N
C.M<N
D.M>N
绛旀
D
4.[(0.06
4
1
5
)
-2.5
]
2
3
-
鈭?/p>
3
3
8
3
-
蟺
0
=
.
绛旀
0
5.
鑻?/p>
鈥?/p>
m>a
鈥?/p>
鏄?/p>
鈥?/p>
鍑芥暟
f(x)=
(
1
3
)
饾懃
+m-
1
3
鐨勫浘璞′笉杩囩涓夎薄闄?/p>
鈥?/p>
鐨勫繀瑕佷笉鍏呭垎鏉′欢
,
鍒欏疄鏁?/p>
a
鑳藉彇鐨勬渶澶ф暣鏁颁负
.
绛旀
-1
缁煎悎绡囩煡鑳借浆鎹?/p>
銆愮患鍚堥泦璁�?/p>
鑰冩硶涓�
鎸囨暟寮忕殑澶у皬姣旇緝
1.(2018
榛戦緳姹熶竷鍙版渤鏈堣�?/p>
,5)
宸茬煡
a=2
0.2
,b=0.4
0.2
,c=0.4
0.6
,
鍒?/p>
(
)
A.a>b>c
B.a>c>b
C.c>a>b
D.b>c>a
绛旀
A