更新1:
ans is pi
a-maths~!
2008-10-04 8:35 am
回答 (1)
2008-10-04 3:52 pm
✔ 最佳答案
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2008-10-04 22:30:52 補充：
I have committed some mistakes
After the integral, it should be
pi[y^2/2 + 1/y] (2 , 1)
So, the ans calculated = pi
Sorry for that.
參考: Myself~~~
收錄日期: 2021-04-23 20:39:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081004000051KK00091