a.maths題目..
唔該有無人可以幫我計個步驟出黎？
Find the two possible equations of the circle,its centre on the line 2x+y-1=0,which passes through the point(1,-1),and touches the line x+2y+5=0.
ans
x^2+y^2+2x-6y-10=0
x^2+y^2-3x+4y+5=0
數學叻既人唔該入黎幫幫手！
2009-05-30 9:36 pm
回答 (1)
2009-05-30 9:56 pm
✔ 最佳答案
圖片參考：http://i601.photobucket.com/albums/tt95/physicsworld9999/physicsworld03May301355.jpg?t=1243662946
圖片參考：http://i601.photobucket.com/albums/tt95/physicsworld9999/physicsworld04May301355.jpg?t=1243662957
AAAAAAAAAAAAAAAAAAAA
參考: Physics king
收錄日期: 2021-04-19 14:26:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090530000051KK00817