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三角函數圖解的副本
Author:
xiaoqing xia
,
羅驥韡 (Pegasus Roe)
GeoGebra
參考資料：
https://plus.google.com/110535140812358973025/posts/EnrM8uNUsQk
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錐體建築師
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畫出對稱圖形
【案例】2013年安徽高考15题
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已知橢圓 x^2/a^2+y^2/b^2=1 (a>b>0)
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