Example of a Matrix Which is Both Row and Column Matrix

Concept Used

– A row matrix has only one row → order \( 1 \times n \)

– A column matrix has only one column → order \( m \times 1 \)

To be both, the matrix must have:

\[ 1 \text{ row and } 1 \text{ column } \Rightarrow 1 \times 1 \]

Example

\[ A = \begin{bmatrix} 5 \end{bmatrix} \]

Explanation

– It has 1 row → so it is a row matrix

– It has 1 column → so it is a column matrix

Final Answer

\[ \begin{bmatrix} a \end{bmatrix} \]