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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
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三位數除以一位數（二）
球体的体积推导
【案例】2018年全国1卷理科12题
找出對稱軸
柱體建築師
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平面外積、有向面積、二階行列式
一次函数图象及性质
極座標雷達
练习
拋物線1--焦點法
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Statistics
Hypothesis Testing
Fractions
Functions
Difference and Slope