已知平面直角坐标系内有一条直线这条直线和x轴y轴分别交于点A(1,0),B(0,1)点p是第一象限内一点,他的坐标为(a,b),由点P向x轴,y轴做的垂线PM,PN,M,N为垂足分别与直线AB相较于点A和点F, 当
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![已知平面直角坐标系内有一条直线这条直线和x轴y轴分别交于点A(1,0),B(0,1)点p是第一象限内一点,他的坐标为(a,b),由点P向x轴,y轴做的垂线PM,PN,M,N为垂足分别与直线AB相较于点A和点F, 当](/uploads/image/z/6864799-31-9.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E5%86%85%E6%9C%89%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E8%BF%99%E6%9D%A1%E7%9B%B4%E7%BA%BF%E5%92%8Cx%E8%BD%B4y%E8%BD%B4%E5%88%86%E5%88%AB%E4%BA%A4%E4%BA%8E%E7%82%B9A%281%2C0%29%2CB%280%2C1%29%E7%82%B9p%E6%98%AF%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90%E5%86%85%E4%B8%80%E7%82%B9%2C%E4%BB%96%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%88a%2Cb%EF%BC%89%2C%E7%94%B1%E7%82%B9P%E5%90%91x%E8%BD%B4%2Cy%E8%BD%B4%E5%81%9A%E7%9A%84%E5%9E%82%E7%BA%BFPM%2CPN%2CM%2CN%E4%B8%BA%E5%9E%82%E8%B6%B3%E5%88%86%E5%88%AB%E4%B8%8E%E7%9B%B4%E7%BA%BFAB%E7%9B%B8%E8%BE%83%E4%BA%8E%E7%82%B9A%E5%92%8C%E7%82%B9F%2C+++++++++%E5%BD%93)
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