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離心率與圓錐曲線
Author:
Ho-Kai Chen
Topic:
Ellipse
,
Hyperbola
,
Parabola
GeoGebra
New Resources
兩位數除以一位數（二）
球体的体积推导
拼砌四邊形
四邉形 (四年級) 教師版
兩位數加法
Discover Resources
小數乘法
Apollonius Problem kissing coin problem
蝴蝶定理
題二
各種五邊形
Discover Topics
Frequency Distribution
Stochastic Process or Random Process
Differential Equation
Percentages
Calculus