Question

已知S＝{(x,y)|x∈R，y∈R}，A＝{(x,y)|x²+ｙ²≠0}，用列舉法表示集合_SA是__________.

Answer 1

解析：_SA＝{(x,y)|x²+ｙ²＝0}＝{(x,y)|x＝0且y=0}={(0,0)}.

答案：{(0,0)}.