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圆锥曲线的统一定义(第二定义)
Author:
少平 朱
GeoGebra
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球体的体积推导
球体的体积推导(优化版)
第八周作业
兩位數除以一位數(二)
拼砌四邊形
Discover Resources
三角測量
二次函數(第二階段)
橢圓折痕
認識假分數
比較數量-1
Discover Topics
Ellipse
Calculus
Median Line
Quadratic Functions
Line Segment