求过点A(0,6)且与圆C:x2+y2+10x+10y=0切于原点的圆的方程 有一步不懂圆C:(x+5)2+(y+5)2=50设:所求圆D:(x-a)2+(y-b)2=r2∵圆C与圆D切于原点∴a=b为什么a=b啊,马上就要睡觉了急啊,
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![求过点A(0,6)且与圆C:x2+y2+10x+10y=0切于原点的圆的方程 有一步不懂圆C:(x+5)2+(y+5)2=50设:所求圆D:(x-a)2+(y-b)2=r2∵圆C与圆D切于原点∴a=b为什么a=b啊,马上就要睡觉了急啊,](/uploads/image/z/2604898-10-8.jpg?t=%E6%B1%82%E8%BF%87%E7%82%B9A%EF%BC%880%2C6%EF%BC%89%E4%B8%94%E4%B8%8E%E5%9C%86C%EF%BC%9Ax2%2By2%2B10x%2B10y%3D0%E5%88%87%E4%BA%8E%E5%8E%9F%E7%82%B9%E7%9A%84%E5%9C%86%E7%9A%84%E6%96%B9%E7%A8%8B+%E6%9C%89%E4%B8%80%E6%AD%A5%E4%B8%8D%E6%87%82%E5%9C%86C%EF%BC%9A%EF%BC%88x%2B5%EF%BC%892%2B%EF%BC%88y%2B5%EF%BC%892%3D50%E8%AE%BE%EF%BC%9A%E6%89%80%E6%B1%82%E5%9C%86D%EF%BC%9A%EF%BC%88x-a%EF%BC%892%2B%EF%BC%88y-b%EF%BC%892%3Dr2%E2%88%B5%E5%9C%86C%E4%B8%8E%E5%9C%86D%E5%88%87%E4%BA%8E%E5%8E%9F%E7%82%B9%E2%88%B4a%3Db%E4%B8%BA%E4%BB%80%E4%B9%88a%3Db%E5%95%8A%2C%E9%A9%AC%E4%B8%8A%E5%B0%B1%E8%A6%81%E7%9D%A1%E8%A7%89%E4%BA%86%E6%80%A5%E5%95%8A%2C)
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