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用平方差公式做因式分解
Author:
鍾文欽
GeoGebra
New Resources
找出對稱軸
畫出對稱圖形
三位數除以一位數（二）
判斷球體
球体的体积推导（优化版）
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鏡面反射光線
ㄩㄢ
拋物線3--平行四邊形法
橢圓軌跡
二次函数的探究
Discover Topics
Continuity
Statistical Characteristics
Poisson Distribution
Surface
Rotation