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Консультация № 198585
15.05.2020, 13:02
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Здравствуйте! Прошу помощи в следующем вопросе:
Надо проверить потенциальность поля вектора и найти потенциал.
заранее спасибо!
Надо проверить потенциальность поля вектора и найти потенциал.
заранее спасибо!
Прикрепленные файлы:
Обсуждение
15.05.2020, 17:15
общий
Здравствуйте.Помогите пожалуйста решить 2 задачи,очень надо,заранее спасибо
Пример 6: Дано a ⃗(1;-2;4), b ⃗(6;3;0) а) перпендикулярны ли векторы a ⃗ и b ⃗? б)найдите (2a ⃗-3b ⃗ )(a ⃗+b ⃗ ) в) найдите косинус угла между векторами a ⃗-b ⃗ и b ⃗ . а.)1*6+(-2)*3+4*0=6+(-6)+0=0(да)
б.)
Пример 6: Дано. АВС – треугольник, А(4;1;-4), В(2;-2;3), С(1;3;-2). Найти: координаты всех векторов, периметр треугольника АВС, косинус всех углов треугольника;
Пример 6: Дано a ⃗(1;-2;4), b ⃗(6;3;0) а) перпендикулярны ли векторы a ⃗ и b ⃗? б)найдите (2a ⃗-3b ⃗ )(a ⃗+b ⃗ ) в) найдите косинус угла между векторами a ⃗-b ⃗ и b ⃗ . а.)1*6+(-2)*3+4*0=6+(-6)+0=0(да)
б.)
Пример 6: Дано. АВС – треугольник, А(4;1;-4), В(2;-2;3), С(1;3;-2). Найти: координаты всех векторов, периметр треугольника АВС, косинус всех углов треугольника;
15.05.2020, 19:19
общий
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