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沙雕图一张
圆环之理
上位魔导师 二十一级
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Floor 1 Posted at: 7/15/24 13:20
巨大八爪鱼
武林盟主 二十一级
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Floor 2 Posted at: 7/15/24 13:45
在此图中,圆的周长为△y,近似的直角图形的周长为dy,当△x→0时,△y-dy的值并不是比△x更高阶的无穷小o(△x),而是一个固定值!不符合微分的定义,所以无法通过定积分找回△y-dy的差值。
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Clicks: 1075 Replies: 1
Author: 圆环之理
Last reply: 巨大八爪鱼
Last reply time: 7/15/24 13:45
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