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圆的面积展开的副本
Author:
于佳欣
,
qianqianhouhou
拖动n分圆,拖动展开展开圆,拖动拼图拼成长方形。
GeoGebra
通过上面操作请推导圆的面积公式。
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探究三角形的全等條件
漂亮的摇摆曲线
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speed
給錐體一個名字 4
Apollonius Problem 7 CCP power inversion 12
習題2-3 請於P40任選一題分段函數,繪製其函數圖形。
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Indefinite Integral
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