已知圆M经过三点A(2,2)B(2,4)C(3,3)从圆M外一点P(a,b)向该圆引切线PT,T为切点,且|PT|=|PO|(O为坐标原点试判断点P是否总在某一定直线上,若是,求出该直线方程,若不是,请说明理由
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![已知圆M经过三点A(2,2)B(2,4)C(3,3)从圆M外一点P(a,b)向该圆引切线PT,T为切点,且|PT|=|PO|(O为坐标原点试判断点P是否总在某一定直线上,若是,求出该直线方程,若不是,请说明理由](/uploads/image/z/10201802-50-2.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%86M%E7%BB%8F%E8%BF%87%E4%B8%89%E7%82%B9A%282%2C2%29B%282%2C4%29C%283%2C3%29%E4%BB%8E%E5%9C%86M%E5%A4%96%E4%B8%80%E7%82%B9P%28a%2Cb%29%E5%90%91%E8%AF%A5%E5%9C%86%E5%BC%95%E5%88%87%E7%BA%BFPT%2CT%E4%B8%BA%E5%88%87%E7%82%B9%2C%E4%B8%94%7CPT%7C%3D%7CPO%7C%EF%BC%88O%E4%B8%BA%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%E8%AF%95%E5%88%A4%E6%96%AD%E7%82%B9P%E6%98%AF%E5%90%A6%E6%80%BB%E5%9C%A8%E6%9F%90%E4%B8%80%E5%AE%9A%E7%9B%B4%E7%BA%BF%E4%B8%8A%2C%E8%8B%A5%E6%98%AF%2C%E6%B1%82%E5%87%BA%E8%AF%A5%E7%9B%B4%E7%BA%BF%E6%96%B9%E7%A8%8B%2C%E8%8B%A5%E4%B8%8D%E6%98%AF%2C%E8%AF%B7%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1)
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