1 |
2 |
A.(0,
| B.(
| C.(1,
| D.(0,1) |
3 |
2 |
1 |
2 |
3 |
2 |
A.1 | B.0 | C.-1 | D.1或-1 |
A.{
| B.{
| ||||||
C.{
| D.{α|α=kπ+(-1)k
|
A.(-1,1) | B.(-∞,-1]∪[1,+∞) | C.(1,+∞) | D.(-∞,-1)∪(1,+∞) |
A.{2} | B.{2,3} | C.{1,2,3} | D.{x|x=3,且x=2} |
A.{1,2} | B.{3,4} |
C.{-5,-7} | D.{1,2,3,4,-5,-7} |
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