设集合A=[(x,y)x2+y2=4],B=[(x,y)|y=√4-x2],C=[x|y=√4-x2],D==[y)|y=√4-x2],试写出他们每两个集合之间的关系
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![设集合A=[(x,y)x2+y2=4],B=[(x,y)|y=√4-x2],C=[x|y=√4-x2],D==[y)|y=√4-x2],试写出他们每两个集合之间的关系](/uploads/image/z/13415935-31-5.jpg?t=%E8%AE%BE%E9%9B%86%E5%90%88A%3D%5B%EF%BC%88x%2Cy%EF%BC%89x2%2By2%3D4%5D%2CB%3D%5B%28x%2Cy%29%7Cy%3D%E2%88%9A4-x2%5D%2CC%3D%5Bx%7Cy%3D%E2%88%9A4-x2%5D%2CD%3D%3D%5By%29%7Cy%3D%E2%88%9A4-x2%5D%2C%E8%AF%95%E5%86%99%E5%87%BA%E4%BB%96%E4%BB%AC%E6%AF%8F%E4%B8%A4%E4%B8%AA%E9%9B%86%E5%90%88%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB)
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