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线性规划1
Author:
徐长俊
GeoGebra
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撒针估算面积实验
正方形雪花图案
三角函数 的副本
比較五件物件的重量
科赫雪花
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試證明：A=B+C
貝式曲線 (Bezier Curve)
三角函数y=sin(wx+b)的图象变换.许兴华数学
새로운 양식
双曲线旋转
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Similar Triangles
Solids or 3D Shapes
Quadrilaterals
Upper and Lower Sum or Riemann Sum
Subtraction