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Консультация № 197144
20.11.2019, 02:10
0.00 руб.
29.11.2019, 17:04
0
1
1
Здравствуйте! Прошу помощи в следующем вопросе:
1-7. Найдите
а) модуль суммы |a + b|.
б) разности двух векторов |a - b|.
в) скалярное произведение векторов a[$183$]b.
г) косинус угла между векторами a и b.
д) векторное произведение [a[$215$]b] двух векторов a и b.
Решить задачу графически и аналитически.
РЕШИТЬ АНАЛИТИЧЕСКИ (ФОРМУЛАМИ) И ГРАФИЧЕСКИ (ГРАФИКАМИ)
1-7. Найдите
а) модуль суммы |a + b|.
б) разности двух векторов |a - b|.
в) скалярное произведение векторов a[$183$]b.
г) косинус угла между векторами a и b.
д) векторное произведение [a[$215$]b] двух векторов a и b.
Решить задачу графически и аналитически.
РЕШИТЬ АНАЛИТИЧЕСКИ (ФОРМУЛАМИ) И ГРАФИЧЕСКИ (ГРАФИКАМИ)
Обсуждение
29.11.2019, 17:03
общий
это ответ
Здравствуйте, dar777!
Для аналитического решения определим координаты векторов. Из приведённого чертежа видно, что вектор a начинается в точке (4, 1) и заканчивается в точке (1, 4), то есть его координаты - {1-4, 4-1} = {-3, 3}; для вектора b координаты вершин соответственно (1, 5) и (5, 4), то есть координаты самого вектора - {5-1, 4-5} = {4, -1}.
Для аналитического решения определим координаты векторов. Из приведённого чертежа видно, что вектор a начинается в точке (4, 1) и заканчивается в точке (1, 4), то есть его координаты - {1-4, 4-1} = {-3, 3}; для вектора b координаты вершин соответственно (1, 5) и (5, 4), то есть координаты самого вектора - {5-1, 4-5} = {4, -1}.
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