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1980東大理系問題
Author:
Daisuke Koda
GeoGebra
New Resources
正１７角形 作図 regular 17-gon
standingwave
正１７角形 作図 regular 17-gon 2
standingwave-reflection
コイン投げと樹形図
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球面レンズの屈折と実像 The spherical lens
高田の定理
二次関数の最大・最小３
multilateral
関数y=ax^2導入
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Logarithm
Rational Numbers
Tree Diagrams
Geometric Distribution
Interest Calculation