来自李善亮的问题
设全集I={1,2,3,4,5,6},集合A={1,2,3,4},A∩B={1},Ci(A∪B)={6},求集合B.
设全集I={1,2,3,4,5,6},集合A={1,2,3,4},A∩B={1},Ci(A∪B)={6},求集合B.
1回答
2020-11-0605:12
设全集I={1,2,3,4,5,6},集合A={1,2,3,4},A∩B={1},Ci(A∪B)={6},求集合B.
设全集I={1,2,3,4,5,6},集合A={1,2,3,4},A∩B={1},Ci(A∪B)={6},求集合B.
解因为Ci(A∪B)={6}所以A∪B={1,2,3,4,5
因为A∩B={1}
所以B={1,5}
还不行吗?