已知集合A={(x,y )|2x-y=0 },B={(x,y )|3x+y=0},C=2x-y=3}求A交B,A交C,(A交B)并(B交C)?
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已知集合A={(x,y )|2x-y=0 },B={(x,y )|3x+y=0},C=2x-y=3}求A交B,A交C,(A交B)并(B交C)?
已知集合A={(x,y )|2x-y=0 },B={(x,y )|3x+y=0},C=2x-y=3}求A交B,A交C,(A交B)并(B交C)?
已知集合A={(x,y )|2x-y=0 },B={(x,y )|3x+y=0},C=2x-y=3}求A交B,A交C,(A交B)并(B交C)?
A交B需同时满足2x-y=0 和3x+y=0,A交B={(0,0 )},
A交C=空集.
(B交C)={(0,0 )},
(A交B)并(B交C)={(0,0 )},