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tanの加法定理その２
Author:
Bunryu Kamimura
GeoGebra
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standingwave-reflection
二次曲線と離心率
standingwave
対数螺旋
サイクロイド
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円錐の側面の中心角と底面の半径（平成27年度全国学力・学習状況調査数学B問題６)
三円交線の交点
離心率
練習問題(1)
ベクトルの交換法則
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Random Variables
Vectors 3D (Three-Dimensional)
Polygons
Interest Calculation
Differential Calculus