已知⊙C:(x-1)2+(y-2)2=4及经过点P(3,-1)的直线l. (1) 发布时间:2017-04-23 17:14 │ 来源:www.tikuol.com 题型:解答题 问题: 已知⊙C:(x-1)2+(y-2)2=4及经过点P(3,-1)的直线l.(1)当l平分⊙C时,求直线l的方程;(2)当l与⊙C相切时,求直线l的方程.
题型:解答题 In the song "Don't Wanna Grow Up", S.H.E expresses young people's ________ fear of theadult world and the desire to stay young forever. [ ]A. ordinaryB. usualC. commonD. average 查看答案