菱形ABCD两条对角线相交于点O,线段OA、OB的长是方程x ²-14x+48=0的两个根(OA>OB).动点P从A点出发,沿A→B→D以每秒2个单位向终点D匀速运动,动点Q从D点同时出发,沿D→C→B→A以每秒3个单位向
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![菱形ABCD两条对角线相交于点O,线段OA、OB的长是方程x ²-14x+48=0的两个根(OA>OB).动点P从A点出发,沿A→B→D以每秒2个单位向终点D匀速运动,动点Q从D点同时出发,沿D→C→B→A以每秒3个单位向](/uploads/image/z/593482-58-2.jpg?t=%E8%8F%B1%E5%BD%A2ABCD%E4%B8%A4%E6%9D%A1%E5%AF%B9%E8%A7%92%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9O%2C%E7%BA%BF%E6%AE%B5OA%E3%80%81OB%E7%9A%84%E9%95%BF%E6%98%AF%E6%96%B9%E7%A8%8Bx+%26%23178%3B-14x%2B48%3D0%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%A0%B9%EF%BC%88OA%EF%BC%9EOB%EF%BC%89.%E5%8A%A8%E7%82%B9P%E4%BB%8EA%E7%82%B9%E5%87%BA%E5%8F%91%2C%E6%B2%BFA%E2%86%92B%E2%86%92D%E4%BB%A5%E6%AF%8F%E7%A7%922%E4%B8%AA%E5%8D%95%E4%BD%8D%E5%90%91%E7%BB%88%E7%82%B9D%E5%8C%80%E9%80%9F%E8%BF%90%E5%8A%A8%2C%E5%8A%A8%E7%82%B9Q%E4%BB%8ED%E7%82%B9%E5%90%8C%E6%97%B6%E5%87%BA%E5%8F%91%2C%E6%B2%BFD%E2%86%92C%E2%86%92B%E2%86%92A%E4%BB%A5%E6%AF%8F%E7%A7%923%E4%B8%AA%E5%8D%95%E4%BD%8D%E5%90%91)
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