Answer: Given a 2x2 matrix A:
A = [a11 a12]
[a21 a22]
The minor of any element a_ij is the determinant of the 1x1 matrix obtained by deleting the i-th row and j-th column from A. In other words, the minor of a_ij is given by:
M_ij = det(A_ij)
where A_ij is the matrix obtained by deleting the i-th row and j-th column from A.
For example, the minor of a11 is given by:
M_11 = det([a22])
= a22
Similarly, we can find the minors of the other elements:
M_12 = det([a21])
= a21
M_21 = det([a12])
= a12
M_22 = det([a11])
= a11
Therefore, the minors of the matrix A are:
M = [a22 a21]
[a12 a11]
Explanation: