Series 2
2014-05-12 9:44 pm
回答 (1)
2014-05-15 6:28 pm
✔ 最佳答案
| Σ(n=1,inf) (-1)^(n+1)/n^4 - (1-1/2^4 + 1/3^4 - 1/4^4)| < 1/5^4= 1/625 < 1/600| Σ(n=1,inf) (-1)^(n+1)/n^4 - (1-1/2^4 + 1/3^4)| > 1/4^4 - 1/5^4 > 1/600
The answer is (b)
收錄日期: 2021-05-02 10:08:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140512000051KK00049