集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0}.C={(x,y)|2x-y=3},求A∩B,A∩C,(A∩B,A∩C,(A∩B)∪(B∩C).
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集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0}.C={(x,y)|2x-y=3},求A∩B,A∩C,(A∩B,A∩C,(A∩B)∪(B∩C).集合A={(x,y)|2x-y=0
集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0}.C={(x,y)|2x-y=3},求A∩B,A∩C,(A∩B,A∩C,(A∩B)∪(B∩C).
集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0}.C={(x,y)|2x-y=3},求A∩B,A∩C,(A∩B,A∩C,(A∩B)∪(B∩C).
集合A={(x,y)|2x-y=0},B={(x,y)|3x+y=0}.C={(x,y)|2x-y=3},求A∩B,A∩C,(A∩B,A∩C,(A∩B)∪(B∩C).
∵2X-Y=0
3X+Y=0
∴X=0,Y=0
∴A∩B={(0,0)}
∵2X-Y=0
2X-Y=3
∴无解
∴A∩C=空集
∵3X+Y=0
2X-Y=3
∴X=3/5,Y=-9/5
∴B∩C={(3/5,-9/5)}
∴(A∩B)∪(B∩C)={(0,0),(3/5,-9/5)}