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問54

Author:嶋津恒彦

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standingwave-reflection
アステロイド
接点の作る円は内接円
standingwave-plus
サイクロイド

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三元一次連立方程式を一発で解く方法
内＋外÷２－１になるわけ
分数の掛け算
三角関数（正弦、余弦）
巻貝の作り方

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Reflection
Equilateral Triangles
Rational Numbers
Cuboid
Interest Calculation

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