Cho A = {–1; 0; 1; 3; 5}; B = {–2; –1; 1; 2; 4}. Tìm A
Cho A = {–1; 0; 1; 3; 5}; B = {–2; –1; 1; 2; 4}. Tìm \(A \cup B;A \cap B;A\backslash B;B\backslash A\).
Lời giải:
\(A \cap B = \left\{ { - 1;1} \right\};A \cup B = \left\{ { - 2; - 1;0;1;2;3;4;5} \right\}\)
\(A\backslash B = \left\{ {0;3;5} \right\};B\backslash A = \left\{ { - 2;2;4} \right\}\).