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抛物线
Author:
罗凯鑫
Topic:
Geometry
GeoGebra
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兩位數除以一位數（二）
找出對稱軸
異分母分數減法
球體建築師
四邉形 (四年級) 教師版
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已知A(1,2)與B(3,4)為兩定點,P(x,y)為直線x+2y=3上一點,求當直線PA=直線PB時 , P的坐標?
[問題] x² + 2xy + y² + 5x + ay + b > 0
prism
圖形的內部、外部與周界
Newton's method
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Arithmetic Mean
Diagrams
Surface
Prism
Probability