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翰林數學_2下_CH4-3_梯形中線性質
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翰林數學
GeoGebra
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四邊形的特性
画直线等分三角形的面积
GeoGebra笔记功能体验课件
異分母分數減法
三位數除以一位數（二）
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設備設計
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
不等式
繡曲線01
Hamid Naderi Yeganeh Circle
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Stochastic Process or Random Process
Inequalities
Geometric Mean
Random Variables
Sine