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Author:
范欣茹
GeoGebra
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國旗 (作圖步驟直接餵給 Claude)
近似值：有效數字
算柱 (兩位數)
美國國旗 (Codex, 2026.10.06)
世界平面地圖 (Codex╱2026.10.07)
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異分母的分數加減
正十二面體
比例中的定值問題
轴对称的两点的动画演示.许兴华数学
Slope of a tangent 切線斜率
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Square
Calculus
Stochastic Process or Random Process
Indefinite Integral
Mathematics