过点P(1,0)的直线l1与抛物线y=x^2交于不同的AB两点,过点P(1,0)的直线L1与抛物线y=x^2交于不同的A、B两点,线段AB的中点为M直线l2过点M,直线L2过点M和Q(-1,0),如果L1的斜率为k,直线L2的斜率与1/(k-2)的
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![过点P(1,0)的直线l1与抛物线y=x^2交于不同的AB两点,过点P(1,0)的直线L1与抛物线y=x^2交于不同的A、B两点,线段AB的中点为M直线l2过点M,直线L2过点M和Q(-1,0),如果L1的斜率为k,直线L2的斜率与1/(k-2)的](/uploads/image/z/8392094-62-4.jpg?t=%E8%BF%87%E7%82%B9P%281%2C0%29%E7%9A%84%E7%9B%B4%E7%BA%BFl1%E4%B8%8E%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%5E2%E4%BA%A4%E4%BA%8E%E4%B8%8D%E5%90%8C%E7%9A%84AB%E4%B8%A4%E7%82%B9%2C%E8%BF%87%E7%82%B9P%281%2C0%29%E7%9A%84%E7%9B%B4%E7%BA%BFL1%E4%B8%8E%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%5E2%E4%BA%A4%E4%BA%8E%E4%B8%8D%E5%90%8C%E7%9A%84A%E3%80%81B%E4%B8%A4%E7%82%B9%2C%E7%BA%BF%E6%AE%B5AB%E7%9A%84%E4%B8%AD%E7%82%B9%E4%B8%BAM%E7%9B%B4%E7%BA%BFl2%E8%BF%87%E7%82%B9M%2C%E7%9B%B4%E7%BA%BFL2%E8%BF%87%E7%82%B9M%E5%92%8CQ%EF%BC%88-1%2C0%EF%BC%89%2C%E5%A6%82%E6%9E%9CL1%E7%9A%84%E6%96%9C%E7%8E%87%E4%B8%BAk%2C%E7%9B%B4%E7%BA%BFL2%E7%9A%84%E6%96%9C%E7%8E%87%E4%B8%8E1%2F%28k-2%29%E7%9A%84)
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