Practice problem
Let x⃗=[021]\vec{x} = \begin{bmatrix} 0 \\ 2 \\ 1 \end{bmatrix}x=021 and y⃗=[492221]\vec{y} = \begin{bmatrix} 49 \\ 22 \\ 21 \end{bmatrix}y=492221.
What is x⃗⋅y⃗\vec{x} \cdot \vec{y}x⋅y?
34
53
65
67
Type a concept, like “slope” or “photosynthesis”.
