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三角形の角の二等分線と比の定理
Author:
Tsuyoshi Yamamoto
GeoGebra
New Resources
コイン投げと樹形図
小テスト
standingwave-plus
standingwave-reflection-free
平均変化率
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y=x^(-n)の微分
微分と積分２（ｙ＝１／ｘの積分）
いろいろ
VectorIntersect
平行移動
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Similar Triangles
Perimeter
Integral Calculus
Mode
Real Numbers