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ΣΣk=1+3+6+
Author:
Bunryu Kamimura
∑k(k-1)=(n-1)n(n+1)/3を使う。
GeoGebra
New Resources
小テスト
6章⑥三角柱の展開図
standingwave-reflection-free
sine-wave
斜めドップラー
Discover Resources
reach_10_3
べき乗関数
正十二面体
二つの3円の作る三角形
動点P のコピー
Discover Topics
Cosine
Upper and Lower Sum or Riemann Sum
Continuity
Solids or 3D Shapes
Secant Line or Secant