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三角函數的由來
Author:
陳政任
GeoGebra
New Resources
漂亮的摇摆曲线
祖冲之的期望：内棋与外棋
圓的切線方程
【案例】2013年安徽高考15题
直線的斜率
Discover Resources
一階導函數
ghseh 二次函數上下y值差
Geometry : Types of Angles (幾何：角的種類)
轨迹
纏繞圖-五邊形
Discover Topics
Algebra
Scatter Plot
Stochastic Process or Random Process
Quadratic Equations
Trapezoid