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scutoid4
Author:
王必欣
GeoGebra
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第八周作业3
垂直線的斜率
圓的切線方程
双心四边形
龙形曲线-分形龙2
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第三冊
[問題] 橢圓兩焦點 (6,0), (0,8)
四角柱(底面為可調整梯形)
橢圓的副本
金惠吉：三维李萨如
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Variance
Natural Numbers
Geometric Mean
Special Points
Logarithmic Functions