
Скялярний добуток Ярик
Authored by Інна Тарковська
Mathematics
9th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
-5
5
20
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Обчисліть скалярний добуток векторів а̅(2; -6) та в̅ (3; 4)
30
18
-18
-30
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Відомо, що ̅а(- 4; 3) колінеарний з ̅в(х; 12). Чому дорівнює х?
16
-16
4
-4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Серед векторів
1) (-2; 4),
2) (2; 2),
3) (0; -1),
4) (1; -2)
знайдіть колінеарні
1 і 4
1 і 3
2 і 3
2 і 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Довжина вектора а дорівнює 2, довжина вектора в дорівнює 1, кут між ними 600. Знайти їх скалярний добуток
-1
1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Знайти кут між векторами а і в, якщо а⋅в=4, ∣а∣=2, ∣в∣=4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Дано вектори ̅а(3;-2) і в̅ (х;4). При якому х а̅⋅в̅=13?
-7
7
6
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