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円の面積はなぜ半径を2回かけるのか?ver4
Author:
T.Fujimaki
GeoGebra
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正17角形 作図 regular 17-gon 2
直線の軌跡
standingwave-reflection
等積変形2
円の伸開線
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変域
figure_002
高次方程式と複素数解
指数関数と対数関数
ピタゴラスの定理の逆
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