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y = sin(x + φ)的圖像
Author:
5sir.math
GeoGebra
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双心四边形
直線的斜率：水平變化 & 鉛垂變化
盈利與虧蝕
平行線的判定
异形操场
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Lagrange
正方形和長方形有甚麼特性？
大字體
开关灯
直纹面单叶
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Logarithmic Functions
Pyramid
Linear Functions
Complex Numbers
Equilateral Triangles