[微積] 這證明嚴謹嗎?
http://calculus.yuyumagic424.net/?p=163#more-163
1. 該 pdf 第一頁證明 f(g(x)) 對x微分的過程,左右同除 dx
2. 第二頁上面,左右同除 dt
3. 第四頁上面, 左右同除 ds 之後, 他認為是有兩個變數, 不能算是微分,
所以直接把 partial 直接改成符號 d
我在想, 有這麼簡單能證, 微積分原文書就不必大費周章了,
我看它的證明過程, 感覺很不嚴謹?
我把這些印出來拿去問別系跟我比較熟的微積分教授,
他看了一眼, 跟我說:「把它燒掉吧.」
惟恐數學世界高深莫測, 教授也有不知道的東西, 上來請問板上高手
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◆ From: 114.25.18.21
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