针对下列给定的集合A和B,分别求AUB、A∩B、A-B、
和A×B。
(1)A={1,2,3,4,5},B={0,3,7}
(2)A={0,1,2,3},B={2,3,4}
【正确答案】：
(1)AUB={0,1,2,3,4,5,7},
A∩B={3},
A-B={1,2,4,5},={∅,{1},{2},{3},{4},5},{1,2},1,3},{1,4},{1,5},{2,3},{2,4},{2,5},3,4},3,5},14,5},{1,2,3},{1,2,4},{1,2,5},{1,3,4},{1,3,5},{1,4,5},{2,3,4},{2,3,5},{2,4,5},{3,4,5},{1,2,3,4},{1,2,3,5},{1,2,4,5},{1,3,4,5},{2,3,4,5},{1,2,3,4,5}},A×B={ , , , , , , , , , , , , , , }
(2)AUB={0,1,2,3,4},
A∩B={2,3},
A-B={0,1},={∅,{0},{1},{2},{3},{0,1},0,2,0,3},{1,2},{1,3},{2,3},{0,1,2},{0,1,3},0,2,3},{1,2,3},{0,1,2,3}}
A×B={ , , , , , , , , , , , }