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].
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