1.已知集合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)∪(B∩C).2.设F(X)=(1-X^2)分之(1+^2),求证:F(-X)=F(X) 谁能教教我 我想知道怎么解
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