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0803_三角函數
Author:
林冠曄
GeoGebra
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漂亮的摇摆曲线
空间中两直线的位置关系
三位數除以一位數（二）
斜率的值
平行線的斜率
Discover Resources
指數函數的平移(1)
Properties of a Parallelogram
比較角的大小 一
双动点变速运动
|cos(z)|
Discover Topics
Curve Sketching
Reflection
Circle
Sequences and Series
Addition