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圆锥曲线的光学性质（抛物线)
Author:
吴礼荣
GeoGebra
New Resources
直線的斜率
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
兩位數加法
祖冲之的期望：内棋与外棋
Discover Resources
Locus 軌跡(5T)
有趣
面積2
軌跡觀察---模擬摺紙
Copy of Mjerenje obujma 5
Discover Topics
Arithmetic
Inequalities
Scatter Plot
Power Functions
Vectors 2D (Two-Dimensional)