СРОЧНО ПОМОГИТЕ!!!!! Даны векторы a→ {−3;5}, b→{2;-4}
вектор С→=-2а→+[tex] \frac{1}{2} [/tex]b имеет координаты:
c→ {7;−12}
c→ {−6;1}
c→ {5;12}
c→ {−1;7}
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