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正四面体の内接球

Author:中村　東

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平均変化率
接点の作る円は内接円
フーリエ級数展開
アステロイド
standingwave-reflection

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生産価格の決定：小麦と鉄の２部門
理念的な共通弦
加法定理の証明 2-4A
円周角の定理2
正方形の一辺

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Sequences and Series
Symmetry
Sine
Upper and Lower Sum or Riemann Sum
Orthocenter

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