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Author:Ricky Chan

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三半圓間的相切圓(Codex╱2026.10.07)
找出對稱軸
四邊形的特性
近似值：有效數字
美國國旗 (Codex 版)

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學習活動五之一在解區域中由平行線法找出極值
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定积分的概念
再作万年历单晨
几何概型

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Limits
Vectors 3D (Three-Dimensional)
Confidence Interval
Similar Triangles
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