若圆x2+y2=r2(r>0)与圆x2+y2-2x+2y=0相交,则r的取值范围是?
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![若圆x2+y2=r2(r>0)与圆x2+y2-2x+2y=0相交,则r的取值范围是?](/uploads/image/z/6791471-71-1.jpg?t=%E8%8B%A5%E5%9C%86x2%2By2%3Dr2%28r%3E0%29%E4%B8%8E%E5%9C%86x2%2By2-2x%2B2y%3D0%E7%9B%B8%E4%BA%A4%2C%E5%88%99r%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%3F)
若圆x2+y2=r2(r>0)与圆x2+y2-2x+2y=0相交,则r的取值范围是?
若圆x2+y2=r2(r>0)与圆x2+y2-2x+2y=0相交,则r的取值范围是?
若圆x2+y2=r2(r>0)与圆x2+y2-2x+2y=0相交,则r的取值范围是?
x2+y2-2x+2y=0
(x-1)^2+(y+1)^2=2
中心坐标(-1,1),R=√2
中心坐标到原点距离=√2
则0