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拋物面的光學性質
Author:
宋政蒲
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
兩組對邊相等的四邊形
找出對稱軸
異分母分數減法
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單項奇函數
指数函数的副本
紙張的長與闊
GeoGebra 检测教程
平面截正方体
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Centroid or Barycenter
Square
Trapezoid
Logic
Statistics