[微積] 一些大學微積分迷思
1. integrate 1/(x^2-1) from 0 to infinity
就我所學瑕積分有兩種
一種是積到無限大
一種是積到f(x)無限大的點
但像這種 x=1沒定義 又積分到無限大的
在數學有被定義嗎
2.power series的收斂半徑 好像很多都先取絕對值做
但絕對值不收斂 也未必不收斂阿
這樣收斂半徑或區間可能比原來的還大不是嗎
還是我的觀念哪裡有錯
以上幾個問題還請各位不吝解惑
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※ 編輯: j6cl3 (123.193.254.105), 04/11/2016 21:24:27
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