【東北大学 2026 数学】第5問 解説 ! (3)の重厚な計算を、3倍角の公式と誘導でスマートに仕留める！
Synopsis
2026年度 東北大学 前期入試（理系）数学の第5問を1行ずつ丁寧に解説します。 テーマは「媒介変数表示の曲線と回転体の体積」 ...
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