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圆锥曲线第二定义
Author:
冯伟冀
Topic:
Conic Sections
GeoGebra
New Resources
垂直線的斜率
圓的切線方程
兩位數除以一位數（二）
空间中两直线的位置关系
多邊形的面積
Discover Resources
fold and unflod the cone with geogebra5.0
周界(移邊)
單一物件連續動畫
|sin(z)|
柱面
Discover Topics
Curve Sketching
Subtraction
Rotation
Unit Circle
Cone