唔該幫我解決一下!
1. ∫ x cos^2 (2x) dx
2.∫ x^2 sin^2 (x) dx
3. ∫ (3x^3+12x-2)/(x^2+4) dx
4. ∫ sec^2 (x) cosec^2 (x) dx
收錄日期: 2021-04-12 11:21:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120816000051KK00238