A.y=2x | B.y=log
| C.y=
| D.y=2x2+x+1 |
2 |
2 |
x |
1 |
4 |
A.128 | B.256 | C.512 | D.8 |
A.直线x=0 | B.直线y=0对称 |
C.点(0,0)对称 | D.点(1,1)对称 |
|
1 |
2 |
A.(-∞,-2]∪[
| B.[-2,0)∪(0,
| ||||||||
C.[-2,0)∪[
| D.(-∞,-2]∪(0,
|
A.x>1>y | B.y>1>x | C.x>y>1 | D.x<y<1 |
A.(2,+∞)∪(-∞,0) | B.(2,+∞)∪(-∞,1) | C.(-∞,1)∪(3,+∞) | D.(2,+∞)∪(-∞,-1) |
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