(1) {3,4,5,6,7,8,9}
(2) {0,1,2,3,4,5,6,7,8,9}
(3) {-3,-1,1,3}
(4) 空集,即 ∅
(5) {(0,-1),(0,0),(1,-1),(1,0),(2,-1),(2,0)}
希望对你有用~
用列举法表示下列集合看我1-3题做的对不对 顺便帮我解答一下4-5题!
(1) {3,4,5,6,7,8,9}
(2) {0,1,2,3,4,5,6,7,8,9}
(3) {-3,-1,1,3}
(4) 空集,即 ∅
(5) {(0,-1),(0,0),(1,-1),(1,0),(2,-1),(2,0)}
希望对你有用~