Cho 3 vectơ \(\overrightarrow{u}=(1;x;-1);\,\,\,\o...

Câu hỏi: Cho 3 vectơ \(\overrightarrow{u}=(1;x;-1);\,\,\,\overrightarrow{v}=(0;2;1);\,\,\,\overrightarrow{w}=(x;7;2).\) Tìm x biết rằng \(\left[ \overrightarrow{u},\overrightarrow{v} \right].\overrightarrow{w}=0.\)

A. \(x=\pm 1.\)

B. \(x=\pm 3.\)

C. \(\left[ \begin{array} {} x=1 \\ {} x=-3 \\ \end{array} \right..\)

D. \(\left[ \begin{array} {} x=3 \\ {} x=1 \\ \end{array} \right..\)