Question

Which of the following represent(s) a vector

• A. $\left[\begin{array}{ccc}1& 2& -1\end{array}\right]$
• B. $\left[\begin{array}{c}2\\ -3\end{array}\right]$
• C. $\left[\begin{array}{ccc}0& 1& 0\\ 0& 2& 0\\ 0& 0& 3\end{array}\right]$
• D. $\left[\begin{array}{cc}2& 3\\ -1& 0\end{array}\right]$

Answer 1

Answer: (A), (B)

$\left[\begin{array}{c}2\\ -3\end{array}\right]$

A matrix which has one row or one column is a vector.