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Author:
树常青
GeoGebra
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盈利與虧蝕
正方形雪花图案
比較五件物件的重量
折扣
龙形曲线-分形龙2
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三圓相切
x^4 vs. x^2
拋物線2--焦點法
学用数学(分季)
平面截圆锥面
Discover Topics
Mathematics
Constructions
Circle
Limits
Geometric Distribution