A.{a|3<a<4} | B.{a|3≤a<4} | C.{a|3<a≤4} | D.{a|3≤a≤4} |
|
1-x2 |
A.∅ | B.{1} | C.[0,+∞) | D.{(0,1)} |
A.A∩B={-2,-1} | B.(∁RA)∪B=(-∞,0) |
C.A∪B={0,+∞} | D.(∁RA)∩B={-2,-1} |
A.(-∞,-2] | B.(-∞,2]∪[4,+∞) | C.(-∞,-2) | D.(-∞,-2]∪[4,+∞) |
A.{2} | B.{2,3,5} | C.{1,4,6} | D.{5} |
1-x |
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