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離心率與圓錐曲線
Author:
Ho-Kai Chen
GeoGebra
New Resources
球体的体积推导
【案例】2018年全国1卷理科12题
球體建築師
錐體建築師
兩組對邊相等和有直角的四邊形
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Geogebragoodone
螢橋國中 陳柏丞
cos(π/n)cos(2π/n)cos(3π/n) ... cos(nπ/n) = ?
梯形堆垛
圆面积的推导-开普勒法