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差的积分
Author:
GeoGebra Institute of WuXi
GeoGebra
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平行線的斜率
垂直線的斜率
百分數及其應用
多邊形的面積
科氏力 (Coriolis Force)
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圓圓求切圓
伸縮矩陣
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
分數除法
Copy of sin(x) 的函數圖形
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Special Points
Conditional Probability
LCM and GCD
Division
Secant Line or Secant