Practice problem
Let x⃗=[x11x]\vec{x} = \begin{bmatrix} x \\ 1 \\ \frac1x \end{bmatrix}x=x1x1 and y⃗=[37−x]\vec{y} = \begin{bmatrix} 3 \\ 7 \\ -x \end{bmatrix}y=37−x. What is xxx if x⃗⋅y⃗=12\vec{x} \cdot \vec{y}=12x⋅y=12?
0
2
10
5
Type a concept, like “slope” or “photosynthesis”.
