在矩形ABCD中,AB=2,BC=3,P是BC上与B、C亮点不重合的任意一点,设PA=x,点D到PA的距离为y,求y与x之间的函数
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![在矩形ABCD中,AB=2,BC=3,P是BC上与B、C亮点不重合的任意一点,设PA=x,点D到PA的距离为y,求y与x之间的函数](/uploads/image/z/5586851-11-1.jpg?t=%E5%9C%A8%E7%9F%A9%E5%BD%A2ABCD%E4%B8%AD%2CAB%3D2%2CBC%3D3%2CP%E6%98%AFBC%E4%B8%8A%E4%B8%8EB%E3%80%81C%E4%BA%AE%E7%82%B9%E4%B8%8D%E9%87%8D%E5%90%88%E7%9A%84%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2C%E8%AE%BEPA%3Dx%2C%E7%82%B9D%E5%88%B0PA%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BAy%2C%E6%B1%82y%E4%B8%8Ex%E4%B9%8B%E9%97%B4%E7%9A%84%E5%87%BD%E6%95%B0)
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