brazil-enem 2024 Q163

brazil-enem · Other · enem__day2 Vectors Introduction & 2D Dot Product Computation

If $\vec{u} = (1, 2)$ and $\vec{v} = (3, 4)$, what is the dot product $\vec{u} \cdot \vec{v}$?
(A) 7
(B) 9
(C) 11
(D) 13
(E) 15

If $\vec{u} = (1, 2)$ and $\vec{v} = (3, 4)$, what is the dot product $\vec{u} \cdot \vec{v}$?

\noindent(A) 7\\
(B) 9\\
(C) 11\\
(D) 13\\
(E) 15