Question

If \[A=[a_{ij}]\], which matrix is \[-A\]?

Options

• \[-A=[-a_{ij}]\]

• \[-A=[a_{ij}+1]\]

• \[-A=[0]\]

• \[-A=[a_{ij}]\]

Answer 1

Each entry of \[A\] is multiplied by \[-1\] to form its negative. Therefore, every \[a_{ij}\] becomes \[-a_{ij}\].