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練習17
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GeoGebra
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正１７角形 作図 regular 17-gon
standingwave-reflection
standingwave-reflection-fixed
standingwave-plus
アステロイド
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根心２
逆中点三角形（中線三角形の拡張）
与えられた点を通る接線
数学B 数列 格子点
２次関数の最大最小 のコピー
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Arithmetic Operations
Means
Equations
Power Functions
Polynomial Functions