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幾何作業
Author:
陳兪宏
GeoGebra
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畫出對稱圖形
兩組對邊相等和有直角的四邊形
異分母分數減法
球体的体积推导
【案例】2018年全国1卷理科12题
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對數函數圖
ptcc trigo level 2
[洋葱] 相似与全等
幂函数的副本
半椭圆面积的定积分动态演示.许兴华数学
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Matrices
Linear Equations
Secant Line or Secant
Difference and Slope
Sphere