Cho A = {–1; 0; 1; 3; 5}; B = {–2; –1; 1; 2; 4}. Tìm A ∪ B ; A ∩ B ; A \ B ; B \ A

Câu 7: Cho A = {–1; 0; 1; 3; 5}; B = {–2; –1; 1; 2; 4}. Tìm $A\cup B;A\cap B;A\backslash B;B\backslash A$ .

Trả lời

$A\cap B=\left\{-1;1\right\};A\cup B=\left\{-2;-1;0;1;2;3;4;5\right\}$

$A\backslash B=\left\{0;3;5\right\};B\backslash A=\left\{-2;2;4\right\}$.