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1.中身の正負で場合わけ!! めんどがるな。これが基本 2.二乗 ためらえ 3.数直線上の点の距離 4.±で外す ※グラフは、負の部分を折り返す
Math Math碧透
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO? Memorize 1
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