Now an n-vector may be displayed either as a row-vector, or a column-vector.

As a row-vector:

\$\begin{bmatrix} 4 & 2 & 3 \end{bmatrix} \$

As a column-vector:

\$\begin{bmatrix} 4 \\\\ 2 \\\\ 3 \\\\ \end{bmatrix} \$

In general, we'll work with column vectors as the default representation.