Find the equation of the curve
2010-01-20 4:47 am
Find the equation of the curve , such that the points on it having the sum of distance from ( 0. a ) and from (0, b) is equal to c.
回答 (1)
2010-01-20 6:00 am
✔ 最佳答案
Please see the calculation below:圖片參考：http://img11.imageshack.us/img11/5048/ellipse.png
2010-01-19 22:00:48 補充：
http://img11.imageshack.us/img11/5048/ellipse.png
收錄日期: 2021-04-23 23:21:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100119000051KK01385