Question

Which general form represents a square matrix?

Options

• \[A=[a_{ij}]_{n \times n}\]

• \[b_{ij}=k\] when \[i=j\]

• \[A=[a_{ij}]_{m \times 1}\]

• \[B=[b_{ij}]_{1 \times n}\]

Answer 1

A square matrix has \[n\] rows and \[n\] columns. Therefore its general form is \[A=[a_{ij}]_{n \times n}\].