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判別式
Author:
hsu hung yang
GeoGebra
New Resources
找出對稱軸
錐體建築師
畫出對稱圖形
三位數除以一位數（一）
兩位數加法
Discover Resources
正弦定理
task4
倍數的判別
優良作品5(沛綺)
弧長與圓心角成比例
Discover Topics
Vectors
Fractions
Matrices
Linear Equations
Parametric Curves