在平面直角坐标系xoy中,已知圆C经过A(0,2),O(0,0),D(t,0) (t>0)三点,M是线段AD上的动点,l1,l2是过B(1,0)且互相垂直的两条直线,其中l1交y轴于E,l2交圆C于P,Q两点,若t是使AM≤2BM恒成立的最小正整数,求
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![在平面直角坐标系xoy中,已知圆C经过A(0,2),O(0,0),D(t,0) (t>0)三点,M是线段AD上的动点,l1,l2是过B(1,0)且互相垂直的两条直线,其中l1交y轴于E,l2交圆C于P,Q两点,若t是使AM≤2BM恒成立的最小正整数,求](/uploads/image/z/7134793-25-3.jpg?t=%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BBxoy%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5%E5%9C%86C%E7%BB%8F%E8%BF%87A%280%2C2%29%2CO%280%2C0%29%2CD%28t%2C0%29+%28t%3E0%29%E4%B8%89%E7%82%B9%2CM%E6%98%AF%E7%BA%BF%E6%AE%B5AD%E4%B8%8A%E7%9A%84%E5%8A%A8%E7%82%B9%2Cl1%2Cl2%E6%98%AF%E8%BF%87B%EF%BC%881%2C0%EF%BC%89%E4%B8%94%E4%BA%92%E7%9B%B8%E5%9E%82%E7%9B%B4%E7%9A%84%E4%B8%A4%E6%9D%A1%E7%9B%B4%E7%BA%BF%2C%E5%85%B6%E4%B8%ADl1%E4%BA%A4y%E8%BD%B4%E4%BA%8EE%2Cl2%E4%BA%A4%E5%9C%86C%E4%BA%8EP%2CQ%E4%B8%A4%E7%82%B9%2C%E8%8B%A5t%E6%98%AF%E4%BD%BFAM%E2%89%A42BM%E6%81%92%E6%88%90%E7%AB%8B%E7%9A%84%E6%9C%80%E5%B0%8F%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E6%B1%82)
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