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作者 partnership 在 PTT [ Math ] 看板的留言(推文), 共5則
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1F推: b點是切點,切點作垂直線垂直切線當然會過圓心11/19 09:54
2F→: 中垂線也一定過圓心,所以兩條線相交就是圓心了11/19 09:56
4F推: 請谷歌,三角函數微積分,一定有11/13 11:32
1F推: 感激不盡,這麼用心的詳解09/03 20:19
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