Предмет: Математика, автор: deniztagizade

Haйдите n(AUB), если n(AпB) = 9, n(A \ B) = 32, n(B\A) 613 = 10. Пожалуйста помогите, очень срочноо, даю 30 баллов(19 задание)​

Приложения:

Ответы

Автор ответа: beatricecooltop
1

Ответ:

Для решения этой задачи нам нужно знать формулу включения-исключения, которая гласит:

n(AUB) = n(A) + n(B) - n(AпB)

где n(A) - количество элементов в множестве A, n(B) - количество элементов в множестве B.

Используя данную формулу, мы можем выразить n(AUB):

n(AUB) = n(A) + n(B) - n(AпB)

n(AUB) = (n(AпB) + n(A \ B)) + (n(B\A) + n(BпA)) - n(AпB)

n(AUB) = n(A \ B) + n(B\A) + n(AпB)

Теперь мы можем подставить данные из условия задачи:

n(AпB) = 9, n(A \ B) = 32, n(B\A) = 10

n(AUB) = n(A \ B) + n(B\A) + n(AпB) = 32 + 10 + 9 = 51

Ответ: n(AUB) = 51.

Похожие вопросы
Предмет: Химия, автор: Mihailova2584
Предмет: Английский язык, автор: dostuchatsyadonebes
3. Read and complete the story with the verbs in the forms of Present Simple, Past Simple or Present Perfect.
A Lot of Work
I live and ___________ (work) in London. At the weekends I usually ____________ (go) to the countryside to see my grandma. I never go there by car. I need to relax, so I take a bus. Last weekend I _______(go) to the country, too. In the bus I _______ (see) an old friend of mine. She _________ (look) very tired. I asked her, “Why are you so tired? Did you have a lot of work today?”. She answered, “ Oh yes, I did. I ______ never ______ (have) so much work. My boss _______(get) absolutely crazy.
He ______ never ______ (give) so many errands to me before!” I ______(feel) really sorry for her and __________(invite) to a café for a cup of coffee. She _____(be) happy to join me.

4. Complete the sentences with will or to be going to. Грамматический материал в учебнике – стр. 20.
1) Mark ________________ play football at 12 o’clock on Saturday.
2) Rachel _______________ meet the editor.
3) We ____________ go to the restaurant in the evening. We have already reserved the table.
4) I _____________ visit my friends.
5) She ________ work as a politician when she graduates from university.





5. What was happening when Caroline came home? (Past Continuous Tense) см правило→

Example: When Caroline came home her cat __was drinking_(drink) milk.

1. When Caroline came home her father _________________ (read) a newspaper.
2. When Caroline came home her mother ________________ (work) with documents.
3. When Caroline came home her granny _________________(read) a book.
4. When Caroline came home her brothers _________________ (play) computer games.
5. When Caroline came home her grandfather _______________ (watch) TV.
6. When Caroline came home her dog __________________ (sleep)
помогите прошу даю 20 баллов пожалуйста