绮惧搧鏂囨。
绮惧搧鏂囨。
鏈熶腑鑰冭瘯鑰冨墠妫�娴嬭瘯棰?/p>
鏈瘯鍗峰垎绗厾鍗?/p>
(
閫夋嫨棰?/p>
)
鍜岀鈪″嵎
(
闈為�夋嫨棰?/p>
)
涓ら儴鍒嗭紝鍏?/p>
150
鍒嗭紝鑰冭瘯鏃堕棿
120
鍒嗛挓锛?/p>
绗?/p>
鈪?/p>
鍗?/p>
(
閫夋嫨棰?/p>
)
涓�銆侀�夋嫨棰?/p>
(
鏈ぇ棰樺叡
12
灏忛锛屾瘡灏忛
5
鍒嗭紝鍏?/p>
60
鍒嗭紟鍦ㄦ瘡灏忛缁欏嚭鐨勫洓涓�夐」涓紝鍙湁
涓�椤规槸绗﹀悎棰樼洰瑕佹眰鐨?/p>
)
1
锛庡鏋?/p>
A
锛?/p>
{
x
|
x
锛烇紞
1}
锛岄偅涔?/p>
A
锛?/p>
0
鈯?/p>
A
B
锛?/p>
{0}
鈭?/p>
A
C
锛?/p>
鈭?/p>
鈭?/p>
A
D
锛?/p>
{0}
鈯?/p>
A
2
锛庡嚱鏁?/p>
f
(
x
)
锛?/p>
3
x
2
1
锛?/p>
x
锛?/p>
lg(3
x
锛?/p>
1)
鐨勫畾涔夊煙鏄?/p>
A.
飪?/p>
飪?/p>
飪?/p>
飪?/p>
锛?/p>
1
3
锛岋紜鈭?/p>
B.
飪?/p>
飪?/p>
飪?/p>
飪?/p>
锛?/p>
1
3
锛?/p>
1
C.
飪?/p>
飪?/p>
飪?
飪?/p>
锛?/p>
1
3
锛?/p>
1
3
D
锛?/p>
飪?
飪?/p>
飪?/p>
飪?/p>
锛嶁垶锛岋紞
1
3
3
锛庝笅鍒楀悇缁勫嚱鏁颁腑锛岃〃绀哄悓涓�鍑芥暟鐨勬槸
A
锛?/p>
y
锛?/p>
x
2
鍜?/p>
y
锛?/p>
(
x
)
2
B
锛?/p>
y
锛?/p>
lg(
x
2
锛?/p>
1)
鍜?/p>
y
锛?/p>
lg(
x
锛?/p>
1)
锛?/p>
lg(
x
锛?/p>
1)
C
锛?/p>
y
锛?/p>
log
a
x
2
鍜?/p>
y
锛?/p>
2log
a
x
D
锛?/p>
y
锛?/p>
x
鍜?/p>
y
锛?/p>
log
a
a
x
4
锛?/p>
a
锛?/p>
log
0.7
0.8
锛?/p>
b
锛?/p>
log
1.1
0.9
锛?/p>
c
锛?/p>
1.1
0.9
鐨勫ぇ灏忓叧绯绘槸
A
锛?/p>
c
>
a
>
b
B
锛?/p>
a
>
b
>
c
C
锛?/p>
b
>
c
>
a
D
锛?/p>
c
>
b
>
a
5
锛庤嫢鍑芥暟
f
(
x
)
锛?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
1
4
x
锛?/p>
x
鈭?/p>
[
锛?/p>
1
锛?/p>
0
飥?/p>
锛?
4
x
锛?/p>
x
鈭?/p>
[0
锛?/p>
1]
锛?/p>
鍒?/p>
f
(log
4
3)
锛?/p>
A.
1
3
B .
1
4
C
锛?/p>
3
D
锛?/p>
4
6
锛庡凡鐭ュ嚱鏁?/p>
f
(
x
)
锛?/p>
7
锛?/p>
a
x
锛?/p>
1
鐨勫浘璞℃亽杩囩偣
P
锛屽垯
P
鐐圭殑鍧愭爣鏄?/p>
A
锛?/p>
(1,8)
B
锛?/p>
(1,7)
C
锛?/p>
(0,8)
D
锛?/p>
(8,0)