Предмет: Алгебра, автор: marusja82

Используя правила треугольника и параллелограмма, постройте векторы суммы и разности векторов a⃗ и b⃗

Начертите любые 2 вектора и найдите их сумму и разность.
Дан вектор с координатами (3,-4 ) Найти длину вектора.
Дан вектор с координатами (-3,-4 ) Найти длину вектора.

Ответы

Автор ответа: afet74
4

Ответ:

Объяснение:

Дан вектор с координатами (3,-4 )

Найти длину вектора.

|a|=\sqrt{3^{2}+(-4)^{2}  } =\sqrt{9+16} =\sqrt{25} =5

Дан вектор с координатами (-3,-4 )

Найти длину вектора.

|a|=\sqrt{(-3)^{2}+(-4)^{2}  } =\sqrt{9+16} =\sqrt{25} =5

Приложения:
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