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Weighted Mean 加權平均數
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
判斷球體
兩位數加法
異分母分數減法
兩位數除以一位數（二）
拼砌四邊形
Discover Resources
linear function
正弦函數y=sin(x)的泰勒級數
軌跡 拋物線 (與點及線等距)
尺规作图_课本内容
钟表制作成功啦
Discover Topics
Indefinite Integral
Exponential Functions
Limits
Variance
Orthocenter