August 2022 1 0 Report
Заданы вектора: а(-1;3;4), b(2;4;-3), с(1;5;-3)
Найти: 1) (2а+3с)*(b-3a)
2) (-а-с)*(b+3а)
3) направляющие косинусы вектора b+а-2с=4
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