Предмет: Геометрия, автор: Аноним

5. Даны координаты векторов

Приложения:

Ответы

Автор ответа: ГАЗ52
0

Даны координаты векторов a{-2; 10} и b{10;-3} .

Определи координаты векторов u и v , если u=3a -2b ,v=2a + b.

Решение.Ищем координаты векторов

1)3а{-2•3;10•3} , 3а{-6;30} .

2b {10•2;-3•2} , 2b{20;-6} .

u{-6-20;30+6} => u{-26;36}.

2)2а{-2•2;10•2} , 2а{-4;20} .

v {-4+10;20-3} = v{6;-17} .

Похожие вопросы
Предмет: История, автор: esapovalow
Предмет: Английский язык, автор: mylja13
ПОМОГИТЕ ПЖ
Task 3. Compare the sentences in each pair and put the verbs in brackets in the Present
Simple or the Present Continuous.
1. a) Don't switch off the computer. I
b) Don't switch off the computer. I.
2. a) The sauce is delicious. It ..
b) I can't go dancing right now - I
3. a) I..
b) I....
it very often.
4. a) Who is that man? He...
b) Who is that man? He
5. a) She ...
b) She..
.... it. (use)
really good. (taste)
ynet.S
these delicious cupcakes. (taste)
(think) of selling my car. Would you be interested in buying it?
(think) you should sell your car. You
(not/use)
it. (need)
Task 4. Correct the mistakes in the sentences.
1. Do your mother work in the hospital?
2. How often are you going on holiday?
3. She have two dogs.
4. Do you going to school every day?
5. Look! The baby walks!
6. I not chatting, I am translating some phrases.
7. Does the baby sleeping yet? We'd like to switch on the TV.
8. Dad is in the kitchen. He speaking on the phone.
9. Are you understanding what I am saying?
10.Can you hear those people? What do they talk about?
11. Does you live in Amsterdam?
12. When does your father usually comes home?
13. She is playing tennis every Wednesday.
14. Has he any sisters or brothers?
15. Do you hear? Somebody plays the piano.
16. He no likes orange juice.
17. Are you believing in God?
18. Don't talk to him - he writes a test paper.
19. It is dark outside, but the children still playing in the yard.
20.Do your sister have a car?
(stay) with her sister until she finds a flat to rent.
(stay) in this hotel every time she comes to London.
quite familiar. (look)
... at us all the time. (look)
Предмет: Математика, автор: juliagimla7
Предмет: Математика, автор: kovalkatty469