A.{
| B.{
| ||||||
C.{
| D.{α|α=kπ+(-1)k
|
π |
6 |
5π |
6 |
π |
6 |
5π |
6 |
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} |
A.A∪(CUB)=U | B.(CUA)∩B=∅ | C.(CUA)∪(CUB)=U | D.(CUA)∩(CUB)=∅ |
A.(-4,0] | B.[-4,0) | C.(-∞,-4)∪[0,+∞) | D.(-∞,-4]∪(0,+∞) |
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