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虹が見えるのはなぜ？
Author:
yoshiyuki ishitsuka
GeoGebra
New Resources
standingwave
フーリエ級数展開
コイン投げと樹形図
カージオイド
standingwave-plus
Discover Resources
根軸の交点（根心）
幾何１完成ノート96
max and min of x y(x^2+y^2-1) on x^2+y^2 <= 4
sonogebra ①
多角形in多角形
Discover Topics
Integral Calculus
Cone
Linear Regression
Root
Interest Calculation