已知全集U={1,2,3,4,5,6,7,8,}集合A={3,4,5}B={4,7,8}验证Cu(A∩B)=CuAUCuB
问题描述:
已知全集U={1,2,3,4,5,6,7,8,}集合A={3,4,5}B={4,7,8}验证Cu(A∩B)=CuAUCuB
答
U={1,2,3,4,5,6,7,8},A={3,4,5},B={4,7,8}A∩B = {3,4,5}∩{4,7,8} = {4}Cu(A∩B) = U - (A∩B) ={1,2,3,4,5,6,7,8}-{4}= {1,2,3,5,6,7,8} andCuA = U - A= {1,2,3,4,5,6,7,8}-{3,4,5}= {1,2,6,7,8...