更新1:
the ans is ln[e/(1+e)]
ddfinite integration
2011-04-02 7:17 am
It is giventhat 1/[t(1-t)] = (1/t) + [1/(1-t)] ,sub t = e^x, evaluate ∫dx/(1-e^x)[1,2]
回答 (1)
2011-04-02 7:43 am
✔ 最佳答案
As follows:圖片參考：http://i707.photobucket.com/albums/ww74/stevieg90/ScreenHunter_01Apr012336.gif
收錄日期: 2021-04-20 00:24:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110401000051KK01311