Tìm x thuộc Z a) 0 < x 7; b) - 5 < x <0; c) -3 <= x <= -1; d) -5 <= x < 1
Giải thích
a) x ∈ {0; 1; 2; 3; 4;5;6;7 } b) x ∈ {-4; -3; -2; -1}
c) x ∈ {-3;-2; - l}. d) x ∈ {-5; -4; -3; -2; -1; 0}
e) x ∈ {-2; -1; 0; 1; 2} f) x = ∅
a) x ∈ {0; 1; 2; 3; 4;5;6;7 } b) x ∈ {-4; -3; -2; -1}
c) x ∈ {-3;-2; - l}. d) x ∈ {-5; -4; -3; -2; -1; 0}
e) x ∈ {-2; -1; 0; 1; 2} f) x = ∅