Question

Which condition holds for a diagonal matrix when \[i\ne j\]?

Options

• \[a_{ij}=1\]

• \[m=n\]

• \[b_{ij}=0\]

• \[b_{ij}=k\]

Answer 1

For a diagonal matrix, every entry not on the diagonal is zero. Thus, \[b_{ij}=0\] whenever \[i\ne j\].