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定义:若实数x,y满足x2=2y+t,y2=2x+t,且x≠y,t为常数,则称点M(x,y)为“线点”.例如,点(0,﹣2)和(﹣2,0)是“线点”.已知:在直角坐标系xOy中,点P(m,n).(1...
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