Integration question

2014-02-19 3:18 am
Please show the steps, thank you!

1.Find e^3/e^x dx

2.1/xln(x^2) dx

3.lnx^2/x dx

回答 (1)

2014-02-19 3:53 am
✔ 最佳答案

圖片參考:http://imgcld.yimg.com/8/n/HA00388954/o/20140218195133.jpg


如圖太細,可把滑鼠移至圖上,按右鍵,另存圖片到電腦上(例如桌面),再在電腦上開啓,便會放大了。

2014-02-18 20:04:52 補充:
You may check results with

http://calculator.tutorvista.com/math/599/integral-calculator.html

2014-02-21 13:35:40 補充:
第2題,網站的答案和我上面所做的似乎不一樣,其實差別在於 integration constant 不一樣,

(1/2)ln(lnx) - (1/2)ln(lnx²)
=(1/2)[ln(lnx) - ln(lnx²)]
=(1/2)ln(lnx/lnx²)
=(1/2)ln[lnx/(2lnx)]
=(1/2)ln(1/2)
=constant


收錄日期: 2021-04-27 20:51:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140218000051KK00141

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