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Автор - ru17022000

Найдите координаты и длину вектора а, если а =  frac{1}{3} m - n , m(-3;6),n(2;-2)

Ответ

Проверено экспертом

Автор - NNNLLL54
a=frac{1}{3}m-n,; m(-3,6),; n(2,-2)\\a=frac{1}{3}(-3,6)-(2,-2)=\\=(-1,2)-(2,-2)=(-1-2,, 2-(-2))=(-3,4)

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

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