求高一代数题答案.过程详细!已知直线l1:mx-y=0,l2:x+my-m-2=0.(I)求证:对m属于R,l1与l2的交点P在一个定圆上;(II)若l1与定圆的另一个交点P1,l2与定圆的另一个交点为P2,求当m在实数范围内取
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![求高一代数题答案.过程详细!已知直线l1:mx-y=0,l2:x+my-m-2=0.(I)求证:对m属于R,l1与l2的交点P在一个定圆上;(II)若l1与定圆的另一个交点P1,l2与定圆的另一个交点为P2,求当m在实数范围内取](/uploads/image/z/13627016-8-6.jpg?t=%E6%B1%82%E9%AB%98%E4%B8%80%E4%BB%A3%E6%95%B0%E9%A2%98%E7%AD%94%E6%A1%88.%E8%BF%87%E7%A8%8B%E8%AF%A6%E7%BB%86%21%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFl1%EF%BC%9Amx-y%3D0%2Cl2%EF%BC%9Ax%2Bmy-m-2%3D0.%28I%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%E5%AF%B9m%E5%B1%9E%E4%BA%8ER%2Cl1%E4%B8%8El2%E7%9A%84%E4%BA%A4%E7%82%B9P%E5%9C%A8%E4%B8%80%E4%B8%AA%E5%AE%9A%E5%9C%86%E4%B8%8A%EF%BC%9B%EF%BC%88II%EF%BC%89%E8%8B%A5l1%E4%B8%8E%E5%AE%9A%E5%9C%86%E7%9A%84%E5%8F%A6%E4%B8%80%E4%B8%AA%E4%BA%A4%E7%82%B9P1%2Cl2%E4%B8%8E%E5%AE%9A%E5%9C%86%E7%9A%84%E5%8F%A6%E4%B8%80%E4%B8%AA%E4%BA%A4%E7%82%B9%E4%B8%BAP2%2C%E6%B1%82%E5%BD%93m%E5%9C%A8%E5%AE%9E%E6%95%B0%E8%8C%83%E5%9B%B4%E5%86%85%E5%8F%96)
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