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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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sine-wave
接点の作る円は内接円
円の伸開線
小テスト
standingwave-reflection-fixed
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Ex13:TaylorPolynomial
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倍角と半角
平行移動
回転体－多角形
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