求下列极限
lim x->0 (1-cosx)/sinx
數 求下列极限
2010-09-12 7:55 pm
回答 (2)
2010-09-12 8:17 pm
✔ 最佳答案
=====================================================圖片參考：http://img256.imageshack.us/img256/3792/24747828.png
2010-09-12 12:17:18 補充：
http://img256.imageshack.us/img256/3792/24747828.png
2010-09-12 10:54 pm
Or
sinx = 2sin(x/2)cos(x/2)
sinx = 2sin(x/2)cos(x/2)
收錄日期: 2021-04-23 23:26:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100912000051KK00511