Контрольные задания > Задание 10. Даны множества. Найти: A ∩ B, A ∪ B, A \ B, B \ A.
Вопрос:
Задание 10. Даны множества. Найти: A ∩ B, A ∪ B, A \ B, B \ A.
Ответ:
а) A = {1;3;4;5;9}, B = {2;4;5;10}.
1. A ∩ B = {4, 5}.
2. A ∪ B = {1, 2, 3, 4, 5, 9, 10}.
3. A \ B = {1, 3, 9}.
4. B \ A = {2, 10}.
б) A = {3;6;7;10}, B = {2;3;10;12}.
1. A ∩ B = {3, 10}.
2. A ∪ B = {2, 3, 6, 7, 10, 12}.
3. A \ B = {6, 7}.
4. B \ A = {2, 12}.
в) A = [4;7], B = [3;6].
1. A ∩ B = [4, 6].
2. A ∪ B = [3, 7].
3. A \ B = [6, 7].
4. B \ A = [3, 4].
г) A = [-3;3], B = [2;10].
1. A ∩ B = [2, 3].
2. A ∪ B = [-3, 10].
3. A \ B = [-3, 2].
4. B \ A = [3, 10].