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作者 skyinwinter 在 PTT [ Math ] 看板的留言(推文), 共3則
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5F→:我用x = sqrt(a)*tan(u)代入算後 最後得到積分為07/05 00:07
6F→:ln [sec(u) + tan(u)] 請問這樣怎麼換回x的變數?07/05 00:08
9F→:對齁= = 謝謝你07/05 00:15
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