利用集合的基本恒等式化简(A∩B)-(C-(A∪B))

2025-04-03 08:09:44
推荐回答(1个)
回答1:

(A∩B∩C)∪(A∩~B∩C)∪(~A∩B∩C)
=(A∩B∩C)∪(A∩B∩C)∪(A∩~B∩C)∪(~A∩B∩C)
=[(A∩B∩C)∪(A∩~B∩C)]∪[(A∩B∩C)∪(~A∩B∩C)]
=(A∩C)∪(B∩C)
=(A∪B)∩C