In the figure,a straight line L with slope m,passes through a point P(-2,-2) and cuts a circle C at two points Q and R.The equation of the circle C is x^2+y^2-14x-10y+49=0 and the length of QR is 8 units
(a)Find,in terms of m,the equation of the line L
(b)By considering the shortest distance from the centr of the circle C to L,find the possible vslue(s) of m
http://i214.photobucket.com/albums/cc72/yesterday0721/15.jpg
Circles
2007-12-16 8:40 pm
回答 (1)
2007-12-16 9:05 pm
✔ 最佳答案
Solution:圖片參考：http://hk.geocities.com/stevieg_1023/m1.gif
圖片參考：http://hk.geocities.com/stevieg_1023/m2.gif
2007-12-17 17:29:26 補充：
漏左.....http://hk.geocities.com/stevieg_1023/m0.gif
收錄日期: 2021-04-25 17:20:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071216000051KK01420