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Meaning of dy/dx
Author:
johnmayhk
GeoGebra
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三角函数 的副本
双心四边形
龙形曲线-分形龙2
斐波那契螺旋弧线（表格法-可动态调节）
撒针估算面积实验
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z=x^2-y^2
體積的量度 3
Net of cone
拋物線5--包絡線法
翰林數學_2下_CH4-2_平行四邊形性質
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Pyramid
Distributions
Integers
Division
Sequences and Series