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[几何] $|z-\sqrt{z^2-1}|$的等值线为半个椭圆

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hbghlyj posted 2023-3-13 23:51 |Read mode

$|z-\sqrt{z^2-1}| = r$的复数$z$的集合为半个椭圆.

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2025-6-8 06:36 GMT+8

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