Question

The matrix $A=\left[\begin{array}{ccc}3& -1& 0\\ 3/2& 3\sqrt{2}& 1\\ 4& 3& -1\end{array}\right]$ is a

• A. column matrix of order $3\times 1$
• B. rectangular matrix of order 3
• C. row matrix of order $1\times 3$
• D. square matrix of order 3

Answer 1

Answer: (D)

$A=\left[\begin{array}{ccc}3& -1& 0\\ \frac{3}{2}& 3\sqrt{2}& 1\\ 4& 3& -1\end{array}\right]$ is a square matrix of order 3