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教学素材：离心率相同的椭圆
Author:
清风拂琴，陌上花开
GeoGebra
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圓周公式的應用
斜率的值
龙形曲线-分形龙
科氏力 (Coriolis Force)
垂直線的斜率
Discover Resources
橢圓的定義畫圖
ie 8
標準分解式2
other
圓周 (圖形D) 的複本
Discover Topics
Multiplication
Linear Programming or Linear Optimization
Distributions
Division
Reflection