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椭圆的光学性质
Author:
孟宝兴
GeoGebra
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三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
找出對稱軸
Discover Resources
立體圖形
標準分解式2
截平面
Copy of 平行四邊形
输入任意函数得到其多项式逼近函数
Discover Topics
Expected Value
Dilation
Quadratic Functions
Definite Integral
Complex Numbers