设集合A={(x,y)|y²-x-1=0},B={(x,y)|4x²-2x-2y+5=0},C={(x,y)|y=kx+b},是否存在k,b(k,b皆为N*),使(A∪B)∩C=∅?集合A是抛物线y²=x+1上的点的集合,此抛物线顶点在(-1,0),且开口朝右.定义域为x≧-...
设集合A={(x,y)|y^2-x-1=0},B={(x,y)|4x^2-2x-2y+5=0},C={(x,y)|y=k
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