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井上直紀
GeoGebra
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standingwave-reflection-free
サイクロイド
円の伸開線
standingwave-reflection-fixed
sine-wave
Discover Resources
二次方程式の利用1
GeoCon Problem 3.10 (Equilateral triangle on right angle)
三平方証明
（使用）中二等積変形 p148
最小二乗法の計算
Discover Topics
Logic
Cosine
Subtraction
Differential Calculus
Power Functions