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楕円と直線の共有点の個数(数研p.52例題3)
Author:
M.Kondoh
GeoGebra
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小テスト
standingwave-reflection-free
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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平面図形 三角形の性質 外心
Archimedes' spiral
Ellipse(tangent)
反射
平面の方程式
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Vectors
Arithmetic Mean
Parallelogram
Cone
Piecewise Functions