题目
题型:填空题难度:一般来源:不详
答案
由A={1,2,3},B={3,4,5,6},
则A∪B={1,2,3,4,5,6},
有∁U(A∪B)={7,8,9};
故答案为{7,8,9}
核心考点
举一反三
10 |
x |
A.[1,2] | B.(1,2) | C.{-1,1,2} | D.{-2,-1,1,2} |
A.(0,0) | B.x=0∪y=0 | C.0 | D.{(0,0)} |
A.(1,+∞) | B.[1,+∞) | C.(-∞,1) | D.(-∞,1] |
10 |
x |
A.[1,2] | B.(1,2) | C.{-1,1,2} | D.{-2,-1,1,2} |
A.(0,0) | B.x=0∪y=0 | C.0 | D.{(0,0)} |
A.(1,+∞) | B.[1,+∞) | C.(-∞,1) | D.(-∞,1] |