你說的這個隻是特例，真正有用的歐拉公式是這個。不過高中不講，因為真正理解需要泰勒展開和級數的概念

來源: STEMkid 於 2026-01-02 08:05:02 [舊帖] [給我悄悄話] 本文已被閱讀：次

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