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半角公式
Author:
Bunryu Kamimura
sin(θ/2)^2=sinθ^2/4+(1-cosθ)^2/4 これを計算してみよう。
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四円傍斜術内接
係数が整数の方程式の根
月の軌道モデル
垂線の性質2
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Frequency Distribution
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