
Векторы
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Козиненко Елизавета
Used 1+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
На координатной плоскости изображены векторы 𝑎⃗ и 𝑏⃗. Найдите скалярное произведение 𝑎⃗⋅𝑏⃗.
12
10
-12
-10
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Даны векторы 𝑎⃗(1;2), 𝑏⃗(−3;6) и 𝑐⃗(4;−2). Найдите длину вектора 𝑎⃗−𝑏⃗+𝑐⃗.
-12
12
10
-10
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Даны векторы 𝑎⃗(4;−2) и 𝑏⃗(−4;−3). Найдите сумму координат 𝑥 и 𝑦 вектора 2𝑎⃗−3𝑏⃗.
-25
5
-5
25
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
На координатной плоскости изображены векторы 𝑎⃗ и 𝑏⃗. Найдите угол между векторами.
90
0
180
270
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Даны векторы 𝑎⃗(2;3), 𝑏⃗(−3;𝑏0). Найдите 𝑏0, если |𝑏⃗|=1,5|𝑎⃗|. Если таких значений несколько, запишите меньшее из них.
-3,5
-4,5
-5,5
4,5
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