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Author:
Lin Ching Chieh
GeoGebra
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第三周作业效果演示
盈利與虧蝕
龙形曲线-分形龙
正方形雪花图案
折扣
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數字組合
線之極點定理 / pole of a line theorem
立體ㄉ
猴子爬樹
正三角形在长方形边上移动加滚动
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Sphere
Optimization Problems
Limits
Matrices
Rhombus