Write the minors and cofactors of each element of the first column of the following matrices and... VIDEO
Write the minors and cofactors of each element of the first column of the following matrices and hence evaluate the determinant in each case:
\[
A=\left[\begin{array}{rrrr}
2 & -1 & 0 & 1 \\
-3 & 0 & 1 & -2 \\
1 & 1 & -1 & 1 \\
2 & -1 & 5 & 0
\end{array}\right]
\]
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