1. ∫_(0~∞) sin³x / x³ dx = ?
(Ans: 3π/8)
2. ∫_(0~∞) lnx/(x²+4)² dx = ?
(Ans: π(ln2 -1)/32 )
收錄日期: 2021-04-23 23:28:47
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120104000051KK00603