【高三大一微積分】積分前篇｜10｜四大積分基本方法之二：三角置換法｜精選範例１０-１

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A 10-minute video from 數學老師張旭: “【高三大一微積分】積分前篇｜10｜四大積分基本方法之二：三角置換法｜精選範例１０-１”.

Video by 數學老師張旭, played through YouTube's embedded player.