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高一数学第七题。
展开全部
7.解
A={1,2,3,4,5,6,7,8}, B={1,2,3},C={3,4,5,6}
A∩B={1,2,3}
A∩C={3,4,5,6}
A∩(BUC)=A∩{1,2,3,4,5,6}={1,2,3,4,5,6}
AU(B∩C)=AU{3}=A={1,2,3,4,5,6,7,8}
A={1,2,3,4,5,6,7,8}, B={1,2,3},C={3,4,5,6}
A∩B={1,2,3}
A∩C={3,4,5,6}
A∩(BUC)=A∩{1,2,3,4,5,6}={1,2,3,4,5,6}
AU(B∩C)=AU{3}=A={1,2,3,4,5,6,7,8}
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