[几何] 抛物线的弦直径

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敬畏数学 posted 2020-4-23 14:58 |Read mode

抛物线$y^2=2px(p>0) $ 的焦点$ F ，$抛物线的弦$ y=kx+m $ ，点$ F $恒在以AB为直径的圆内，则m的范围————。代数法没有问题，几何法？

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2025-6-8 06:39 GMT+8

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