數學 math help!!!! help!!!!!!!!!!!!!!
回答 (1)
2008-03-21 3:30 am
✔ 最佳答案
半徑的坐標= {[(-2)+(-3)]/2 , (0+1)/2}=(-5/2,1/2)
半徑=√{[-2-(-3)]+(0-1)}
=√2
圓的方程:[x-(-5/2)]+(y-1/2)=(√2)
(x+5/2)+(y-1/2)=2
x+5x+25/4+y-y+1/4=2
x+y+5x-y+93/4=0
4x+4y+20x-4y+93=0
收錄日期: 2021-04-23 20:33:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080320000051KK02624