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七、加与减（三）
Author:
玖数
GeoGebra
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球体的体积推导
【案例】2018年全国1卷理科12题
圓周公式的應用
垂直線的斜率
圓的切線方程
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斜率 - 概念及定義 (1)
分段移動
GeoGebra繪本製作
約分BB
整數乘分數
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Parametric Curves
Vectors 3D (Three-Dimensional)
Addition
Means
Quadratic Equations