Question

For \[\begin{vmatrix}1&-2\\4&3\end{vmatrix}\], what is \(M_{11}\)?

Options

• \(1\)

• \(3\)

• \(4\)

• \(-2\)

Answer 1

For \(M_{11}\), delete the first row and first column. The remaining entry is \(3\), so its determinant and hence \(M_{11}\) is \(3\).