plz show me the important steps~~*
圖片參考：http://img177.imageshack.us/img177/2702/math102.jpg
directional derivatives II
2010-11-12 4:28 am
回答 (2)
2010-11-12 5:59 am
✔ 最佳答案
========================================================圖片參考：http://img801.imageshack.us/img801/6338/26091077.png
2010-11-11 21:59:42 補充：
http://img801.imageshack.us/img801/6338/26091077.png
2010-11-12 08:19:46 補充：
Amendment for the first part the answer should be square root 745
2010-11-12 4:33 am
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收錄日期: 2021-04-23 23:24:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101111000051KK01215