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  • 已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)

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  • math test

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  • 找角平分線

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  • 用GeoGebra畫圓錐

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  • 用GeoGebra畫圓錐

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  • 正多形與圓

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  • 斜線圖的畫法

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  • 斜線圖 for x5

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  • 文氏圖

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  • 亂數取值 by java

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  • 圓圓求切圓

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  • 凸透鏡成像

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  • this is math pic

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  • 匯出圖檔

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  • this is a test

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  • this is a test

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  • 圓交與公切線

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  • aaa aaa aaa aaa

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  • 三角形的工具

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  • latex 的東西

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  • click and Jump to up

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  • 二次函數的圖形

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  • 二次函數圖形

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  • nothing for math

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