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教学素材：抛物线参数方程
Author:
清风拂琴，陌上花开
GeoGebra
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國旗 (Claude 版)
國旗 (作圖步驟直接餵給 Claude)
美國國旗 (Codex, 2026.10.06)
近似值：有效數字
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龍騰4_1-1講段9
製作對稱圖形 LEVEL 2
(005)80201辛宇婕
兩位數除三位數(商<10)
椭圆的定义
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Division
Polygons
Cylinder
Coordinates
Differential Equation