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tool3
Author:
黃詩淳
GeoGebra
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盈利與虧蝕
比較五件物件的重量
第八周作业
第八周作业2
异形操场
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硬幣
S5 2D Trigonometry
正切线生成函数图像
GeoGebra 检测教程
圆周率π的收敛极快算法（代数几何方法）
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Diagrams
Function Graph
Root
Centroid or Barycenter
Histogram