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轉盤1
Author:
S CHOW
轉盤1
GeoGebra
New Resources
第八周作业
近似值：有效數字
判斷球體
兩位數除以一位數（二）
畫出對稱圖形
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亂數取值 by java
線段上分點軌跡(橢圓)
凹面鏡成像
開始製作你的GGB
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
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Difference and Slope
Cosine
Geometry
Complex Numbers
Root