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n-m9bch1-1-2d 二次函數及其圖形-02
Author:
均一
GeoGebra
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國旗 (Claude 版)
小数 的副本
sanjiaohanshu
兩組對邊相等和有直角的四邊形
畫出對稱圖形
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相向而行的兩行進波
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
二次函數
向量求和动画演示
比較分數大小
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Interest Calculation
Secant Line or Secant
Hyperbola
Natural Numbers
Frequency Distribution