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橢圓包絡線
Author:
rachmaninoff
GeoGebra
New Resources
圓的切線方程
漂亮的摇摆曲线
兩位數除以一位數（一）
球体的体积推导
兩位數除以一位數（二）
Discover Resources
方格紙上畫梯形2
peacock2
兩數相加
S3 Trigonometry
整數乘分數
Discover Topics
Vectors 2D (Two-Dimensional)
Correlation
Hyperbola
Arithmetic Operations
Linear Programming or Linear Optimization