1 |
2 |
A.奇函数且在(0,+∞)上单调递减 |
B.偶函数且在(0,+∞)上单调递增 |
C.奇函数且在(-∞,0)上单调递减 |
D.偶函数且在(-∞,0)上单调递增 |
1 |
2 |
log | f(x)
|
log | x
|
log | x
|
log | x2
|
4-x2 |
A.[-2,2] | B.[-2,0] | C.[0,2] | D.[-2,0) |
A.log2x-3,(x>0) | B.log2(x-3),(x>3) |
C.log2(x+3),(x>-3) | D.2x-3,(x∈R) |
1 |
1-x2 |
1 |
3 |
A.-
| B.0 | C.1 | D.2 |
A.y=
| B.y=-
| C.y=-
| D.y=
|
© 2017-2019 超级试练试题库,All Rights Reserved.