directional derivatives I

👨🏻‍🏫 學術台數學

Mabel

2010-11-12 4:26 am

wt do i need to do in order to get to the answer!?
plz show me the important steps~~*

圖片參考：http://img177.imageshack.us/img177/1835/math101.jpg

更新1:

i guess not...coz i actually worked out i and ii... direction of (1,1,0) means (1+1)i + (1+2)j + (0-1)k yeh!?

回答 (2)

用戶9112

2010-11-14 5:49 am

✔ 最佳答案

Please check if your question or answer for (ii) has any mistake?

2010-11-13 21:38:01 補充：
I see, I wrongly interpret (1,1,0) as a vector!!!

2010-11-13 21:49:13 補充：
=======================================================

圖片參考：http://img811.imageshack.us/img811/6533/55103050.png

2010-11-13 21:49:25 補充：
http://img811.imageshack.us/img811/6533/55103050.png

👍 0 👎 0

Mabel

2010-11-14 5:58 pm

yeh that's wt i thought in the beginning!! like 1i+1j+0k.. haha! xD

👍 0 👎 0

收錄日期: 2021-04-23 23:24:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101111000051KK01211

檢視 Wayback Machine 備份