1 |
2 |
A.(-∞,-1) | B.(-∞,-1] | C.(1,+∞) | D.[1,+∞) |
1 |
2x |
1 |
2 |
1 |
2 |
1 |
2 |
A.(-∞,2) | B.(2,+∞,) | C.(-2,2) | D.(-∞,-2)∪(2,+∞) |
ax+1 |
ax-1 |
lg(1-x2) |
|x+3|-3 |
|x| |
x |
1+x |
1-x |
A.1 | B.2 | C.3 | D.4 |
A.(-3,0)∪(3,+∞) | B.(-∞,-3)∪(0,3) | C.(-∞,-3)∪(3,+∞) | D.(-3,0)∪(0,3) |
A.
| B.-1≤m≤3 | C.-1≤m<
| D.m>
|
1 |
a |
A.(
| B.(
| C.(1,+∞) | D.(0,
|
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