問題詳情
1. 圓方程式(x-2)2+(y+1)2=4 ，圓心及半徑為？
(A) 圓心(-2,1) ，半徑4
(B) 圓心(-2,1) ，半徑2
(C) 圓心(2,-1) ，半徑4
(D) 圓心(2,-1) ，半徑2
(A) 圓心(-2,1) ，半徑4
(B) 圓心(-2,1) ，半徑2
(C) 圓心(2,-1) ，半徑4
(D) 圓心(2,-1) ，半徑2
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增
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