
Координаты вектора в пространстве, 6 часть, 25.02.21
Authored by Елена Макарова
Mathematics
10th Grade
10 Questions
Used 40+ times

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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Если векторы взаимно перпендикулярны, то их скалярное произведение
равно 1
равно 0
не определено
не знаю про скалярное произведение ничего
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
У коллинеарных векторов
соответствующие координаты должны быть равны
соответствующие координаты должны быть пропорциональны
невозможно выяснить без чертежа
Первый раз слышу про такие векторы
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Если произведение векторов равно нулю, то...
два вектора равные
два вектора коллениарные
два вектора ортогональные
два вектора сонаправлены
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Вектор а(1; 2с+1; -2) перпендикулярен вектору в(с; 1; 2с). Найдите значение с.
-1
1
2
-2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Известно, что угол между векторами а и в равен 135 градусов. Длина вектора а равна 2, длина вектора в равна 3. Найдите скалярное произведение векторов а и в.
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Даны векторы
Найдите косинус угла между векторами с и в.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Найдите координаты вектора р, если известно, что
и вектор а = i-j+2k, вектор в=2i+2j.(8;-4;-4)
(-4; 8; 4)
(8; 4; 4)
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