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三角函數的性質
Author:
yuchengda
GeoGebra
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找出對稱軸
画直线等分三角形的面积
異分母分數減法
GeoGebra笔记功能体验课件
三位數除以一位數（一）
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二次涵数的图象y=ax^2+b
正弦定理的验证
拋物面光學性質
V3-2-2
幾何板上的等腰梯形
Discover Topics
Limits
Straight Lines
Secant Line or Secant
Matrices
Trigonometric Functions