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二つの正三角形

Author:Naofumi Horio

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フーリエ級数展開
standingwave-reflection-fixed
直方体の対角線
standingwave-plus
カージオイド

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二重積分
楕円=円+円
接線と微分のコピー
橢圓2-四圓心近似法
長方形の折り返し(PC版)

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Natural Numbers
Cuboid
Subtraction
Intersection
Equilateral Triangles

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