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（使用）中三二次関数利用p117
Author:
上野隆太郎
GeoGebra
New Resources
standingwave-reflection-free
standingwave
正１７角形 作図 regular 17-gon 2
standingwave-plus
コイン投げと樹形図
Discover Resources
Poncelet Polism
等角共役点
二重おうぎ形の面積（分割）
y=ax^2+bの残像
P99補充問題
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Real Numbers
Parametric Curves
Exponential Functions
Mode
Quadratic Equations