已知圆C于两坐标轴都相切,圆心C到直线Y=-X的距离等于√21.求圆C的方程2.若直线L:x/m+y/n=1(m>2,n>2)与圆c相切.求证:m*n≥6+4√23.圆心在y轴上且通过(3,1)的圆与x轴相切,则该圆的方程是?
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![已知圆C于两坐标轴都相切,圆心C到直线Y=-X的距离等于√21.求圆C的方程2.若直线L:x/m+y/n=1(m>2,n>2)与圆c相切.求证:m*n≥6+4√23.圆心在y轴上且通过(3,1)的圆与x轴相切,则该圆的方程是?](/uploads/image/z/11309634-18-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%86C%E4%BA%8E%E4%B8%A4%E5%9D%90%E6%A0%87%E8%BD%B4%E9%83%BD%E7%9B%B8%E5%88%87%2C%E5%9C%86%E5%BF%83C%E5%88%B0%E7%9B%B4%E7%BA%BFY%3D-X%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%AD%89%E4%BA%8E%E2%88%9A21.%E6%B1%82%E5%9C%86C%E7%9A%84%E6%96%B9%E7%A8%8B2.%E8%8B%A5%E7%9B%B4%E7%BA%BFL%EF%BC%9Ax%2Fm%2By%2Fn%3D1%28m%3E2%2Cn%3E2%29%E4%B8%8E%E5%9C%86c%E7%9B%B8%E5%88%87.%E6%B1%82%E8%AF%81%3Am%EF%BC%8An%E2%89%A56%EF%BC%8B4%E2%88%9A23.%E5%9C%86%E5%BF%83%E5%9C%A8y%E8%BD%B4%E4%B8%8A%E4%B8%94%E9%80%9A%E8%BF%87%EF%BC%883%2C1%EF%BC%89%E7%9A%84%E5%9C%86%E4%B8%8Ex%E8%BD%B4%E7%9B%B8%E5%88%87%2C%E5%88%99%E8%AF%A5%E5%9C%86%E7%9A%84%E6%96%B9%E7%A8%8B%E6%98%AF%3F)
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