Given the curve C:x^2+2ycosx=4y^2
(a)Show that the point A(π/2,π/4)lies on C
(b)Find the equation of the normal to C at A
amaths
2008-02-19 3:38 am
回答 (2)
2008-02-19 4:08 am
✔ 最佳答案
Solution:圖片參考：http://hk.geocities.com/stevieg_1023/AMAAM1.gif
圖片參考：http://hk.geocities.com/stevieg_1023/AMAAM2.gif
2008-02-19 3:54 am
(a) 將 point A sub into C
Due to point A lies on C , so ans is 0
*記住要分L.H.S and R.H.S *
(b) Find slope of normal and then use *point slope form*
Due to point A lies on C , so ans is 0
*記住要分L.H.S and R.H.S *
(b) Find slope of normal and then use *point slope form*
參考: myself
收錄日期: 2021-04-23 22:56:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080218000051KK02904