已知全集A={1,2,3,4,5,6,7,8,9},AnB={2},(CuA)n(CuB)={1,9},(CuA)nB=
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已知全集A={1,2,3,4,5,6,7,8,9},AnB={2},(CuA)n(CuB)={1,9},(CuA)nB={4,6,8},确定A,B
对不起,打错了,是全集U
对不起,打错了,是全集U
![已知全集A={1,2,3,4,5,6,7,8,9},AnB={2},(CuA)n(CuB)={1,9},(CuA)nB=](/uploads/image/z/4926208-40-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%85%A8%E9%9B%86A%3D%7B1%2C2%2C3%2C4%2C5%2C6%2C7%2C8%2C9%7D%2CAnB%3D%7B2%7D%2C%EF%BC%88CuA%29n%28CuB%29%3D%7B1%2C9%7D%2C%28CuA%29nB%3D)
题目中全集A 应该是U
过程不怎么好写
因为(CuA)nB={4,6,8},AnB={2}
所以集合B的元素包括2.4.6.8
A包括2.3.5.7
过程不怎么好写
因为(CuA)nB={4,6,8},AnB={2}
所以集合B的元素包括2.4.6.8
A包括2.3.5.7
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