Exercise 4
Shown below are vectors \(\vvec_1\) and \(\vvec_2\text{.}\) Suppose that the matrix \(A\) is
\begin{equation*}
A = \left[\begin{array}{rr}
\vvec_1 \amp \vvec_2
\end{array}\right]\text{.}
\end{equation*}
What are the dimensions of the matrix \(A\text{?}\)

On the plot above, indicate the vectors
\begin{equation*} A\twovec{1}{0}, A\twovec{2}{3}, A\twovec{0}{3}\text{.} \end{equation*} Find all vectors \(\xvec\) such that \(A\xvec=\bvec\text{.}\)
Find all vectors \(\xvec\) such that \(A\xvec = \zerovec\text{.}\)