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ΣΣk=1+3+6+
Author:
Bunryu Kamimura
∑k(k-1)=(n-1)n(n+1)/3を使う。
GeoGebra
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カージオイド
standingwave-reflection-free
接点の作る円は内接円
standingwave
standingwave-reflection
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メビウスの帯
ベクトルの外積
一方通行
回転 11
正多面体 のコピー
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Pyramid
Piecewise Functions
Histogram
Sphere
Standard Deviation