已知抛物线y²sup2;=4x的焦点为F,直线l过M(4,0) 1、若点F到直线l的距离为√3,求直线l的斜率2、设A、B为抛物线上的两点,且AB不与x轴垂直,若线段AB的垂直平分线恰过点M,求证:线段AB中点横坐标
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![已知抛物线y²sup2;=4x的焦点为F,直线l过M(4,0) 1、若点F到直线l的距离为√3,求直线l的斜率2、设A、B为抛物线上的两点,且AB不与x轴垂直,若线段AB的垂直平分线恰过点M,求证:线段AB中点横坐标](/uploads/image/z/2991023-71-3.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%26%23178%3Bsup2%3B%3D4x%E7%9A%84%E7%84%A6%E7%82%B9%E4%B8%BAF%2C%E7%9B%B4%E7%BA%BFl%E8%BF%87M%284%2C0%29+1%E3%80%81%E8%8B%A5%E7%82%B9F%E5%88%B0%E7%9B%B4%E7%BA%BFl%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA%E2%88%9A3%2C%E6%B1%82%E7%9B%B4%E7%BA%BFl%E7%9A%84%E6%96%9C%E7%8E%872%E3%80%81%E8%AE%BEA%E3%80%81B%E4%B8%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E7%9A%84%E4%B8%A4%E7%82%B9%2C%E4%B8%94AB%E4%B8%8D%E4%B8%8Ex%E8%BD%B4%E5%9E%82%E7%9B%B4%2C%E8%8B%A5%E7%BA%BF%E6%AE%B5AB%E7%9A%84%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E7%BA%BF%E6%81%B0%E8%BF%87%E7%82%B9M%2C%E6%B1%82%E8%AF%81%EF%BC%9A%E7%BA%BF%E6%AE%B5AB%E4%B8%AD%E7%82%B9%E6%A8%AA%E5%9D%90%E6%A0%87)
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