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圆锥曲线的第二定义
Author:
孟宝兴
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
盈利與虧蝕
撒针估算面积实验
平行線的判定
第八周作业
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色彩視覺藝術
空間坐標
異側AP-BP最大值
黃金矩形與複數級數
椭圆规
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Triangles
Arithmetic Mean
Stochastic Process or Random Process
Cosine
Similar Triangles