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Discuz Math Forum»Forum › Mathematics › High School › 这道题是不是跟极点极线有关（求E点坐标时）
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[几何] 这道题是不是跟极点极线有关（求E点坐标时）

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hjfmhh

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hjfmhh posted 2023-4-29 19:04 |Read mode
LOTK(@V)X)RIBCTNA9`9K%E.png 这道题是不是跟极点极线有关（求E点坐标时得到左准线，感觉是左焦点对应的极线是左准线，但不知道是什么原因）
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Ly-lie

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Ly-lie posted 2023-5-4 20:43
焦点的极线确实是准线，用极线方程算一下不就知道了
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