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§1.3集合的基本运算实例引入已知A={1,2,3,4,5},B={3,4,5,6,8},C={3,4,5},D={1,2,3,4,5,6,8}画出韦恩圈并观察A,B与C,A,B与D的关系一、交集... 2025-08-251703616.97 KB4页72
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