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inhella
@inhella
August 2022
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даны векторы а(3;-2;-1) b(1;1;2) c(-3;2;4). найти координаты вектора d=2a+3b-c. в ответ запишите сумму координат вектора.
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irka1804
Координаты д
х: 3*2 + 3*1 - (-3) = 6 + 3 + 3 = 12
у: 2 * (-2) + 3 * 1 - 2 = -4 + 3 - 2 = -3
z: 2 * (-1) + 3 * 2 - 4 = -2 + 6 - 4 = 0
z + х + у = 12 - 3 = 9
Ответ 9
3 votes
Thanks 8
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Answers & Comments
х: 3*2 + 3*1 - (-3) = 6 + 3 + 3 = 12
у: 2 * (-2) + 3 * 1 - 2 = -4 + 3 - 2 = -3
z: 2 * (-1) + 3 * 2 - 4 = -2 + 6 - 4 = 0
z + х + у = 12 - 3 = 9
Ответ 9