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spinral

Author:劉瓊如

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兩位數除以一位數（二）
找出對稱軸
異分母分數減法
球体的体积推导（优化版）
拼砌四邊形

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鏡射
近似值：小數位及有效數字
偏心的農夫?
向量與坐標
诱导公式六（90°-α）

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Hypothesis Testing
Median Line
Sphere
Random Experiments
Algebra

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