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餘弦函數 y=Cos(x)
Author:
alicesung0324
GeoGebra
New Resources
判斷球體
第八周作业
拼砌四邊形
兩位數除以一位數（二）
四邊形的特性
Discover Resources
圓錐曲線
同心圓
廣義三角函數的換算
探讨二次多项式的参数和图型
Addition and Subtraction of Directed Numbers (1)
Discover Topics
Differential Equation
Optimization Problems
Trigonometry
Perimeter
Probability