题型如下:将△ABC置于平面直角坐标系中,∠BAC=90°,点A的坐标为(3,0),点B的坐标为(0,4)过点C做x轴的垂线,垂足为D,且点D坐标为(7,0)(3)若动点P以每秒1个单位为速度从D点出发沿折线D→A→B运
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![题型如下:将△ABC置于平面直角坐标系中,∠BAC=90°,点A的坐标为(3,0),点B的坐标为(0,4)过点C做x轴的垂线,垂足为D,且点D坐标为(7,0)(3)若动点P以每秒1个单位为速度从D点出发沿折线D→A→B运](/uploads/image/z/12542034-66-4.jpg?t=%E9%A2%98%E5%9E%8B%E5%A6%82%E4%B8%8B%EF%BC%9A%E5%B0%86%E2%96%B3ABC%E7%BD%AE%E4%BA%8E%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E2%88%A0BAC%3D90%C2%B0%2C%E7%82%B9A%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%283%2C0%29%2C%E7%82%B9B%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%280%2C4%29%E8%BF%87%E7%82%B9C%E5%81%9Ax%E8%BD%B4%E7%9A%84%E5%9E%82%E7%BA%BF%2C%E5%9E%82%E8%B6%B3%E4%B8%BAD%2C%E4%B8%94%E7%82%B9D%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%887%2C0%EF%BC%89%EF%BC%883%EF%BC%89%E8%8B%A5%E5%8A%A8%E7%82%B9P%E4%BB%A5%E6%AF%8F%E7%A7%921%E4%B8%AA%E5%8D%95%E4%BD%8D%E4%B8%BA%E9%80%9F%E5%BA%A6%E4%BB%8ED%E7%82%B9%E5%87%BA%E5%8F%91%E6%B2%BF%E6%8A%98%E7%BA%BFD%E2%86%92A%E2%86%92B%E8%BF%90)
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