已知集合A={1,2,3,4,5},集合B={4,5,6,7,8,9}求A∩B和AUB.这题不会写,
问题描述:
已知集合A={1,2,3,4,5},集合B={4,5,6,7,8,9}求A∩B和AUB.这题不会写,
答
A∩B={4,5}AUB={1,2,3,4,5,6,7,8,9}
已知集合A={1,2,3,4,5},集合B={4,5,6,7,8,9}求A∩B和AUB.这题不会写,
A∩B={4,5}AUB={1,2,3,4,5,6,7,8,9}