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對稱成分(零序.正序.負序)
Author:
黃斌
GeoGebra
New Resources
兩組對邊相等的四邊形
球体的体积推导
【案例】2018年全国1卷理科12题
球体的体积推导（优化版）
兩位數加法
Discover Resources
Sequence指令練習(正n邊形面積的展開)
拋物線與直線相交弓形區域
圓方程式
對稱-釘板-Student
同心多邊形
Discover Topics
Arithmetic Operations
Numbers
Means
Sine
Vectors