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畢氏定理雙次平移證明
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学用数学
GeoGebra
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第八周作业2
平行線的判定
折扣
龙形曲线-分形龙2
第八周作业
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task4
量度的誤差 Errors in Measurement
Concept of Ratios 比的概念
線性組合2: 三角形
多边形绕圆滚动
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Conic Sections
Reflection
Tree Diagrams
Cuboid
Linear Regression