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対偶

Author:嶋津恒彦

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正１７角形　作図　regular 17-gon 2
standingwave-plus
sine-wave
standingwave-reflection
対数螺旋

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ブラックボックスでコミュニケーションを考える
二次曲面の接平面
cosxの長さ
東大2018理系3
１次方程式の利用（追いかけ）ver.2

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Logic
LCM and GCD
Polygons
Cuboid
Natural Numbers

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