一条抛物线y=1/4x平方+m与x轴相较于A,B两点(A在B的左侧)若点M,N的坐标为(0,-2).(4,0)抛物线与直线MN始终有交点,线段AB的长度的最小值
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![一条抛物线y=1/4x平方+m与x轴相较于A,B两点(A在B的左侧)若点M,N的坐标为(0,-2).(4,0)抛物线与直线MN始终有交点,线段AB的长度的最小值](/uploads/image/z/6898268-20-8.jpg?t=%E4%B8%80%E6%9D%A1%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D1%2F4x%E5%B9%B3%E6%96%B9%2Bm%E4%B8%8Ex%E8%BD%B4%E7%9B%B8%E8%BE%83%E4%BA%8EA%2CB%E4%B8%A4%E7%82%B9%28A%E5%9C%A8B%E7%9A%84%E5%B7%A6%E4%BE%A7%29%E8%8B%A5%E7%82%B9M%2CN%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%280%2C-2%29.%284%2C0%29%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8E%E7%9B%B4%E7%BA%BFMN%E5%A7%8B%E7%BB%88%E6%9C%89%E4%BA%A4%E7%82%B9%2C%E7%BA%BF%E6%AE%B5AB%E7%9A%84%E9%95%BF%E5%BA%A6%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC)
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