Every element present in the square matrix has minor. For example, we want to calculate minor of element a11, then we eliminate 1st row and 1st column from the matrix and calculate determinant of remaining matrix. The determinant of that remaining matrix is minor of a11. Similarly, if we want to calculate minor of element a12 then we eliminate 1st row and 2nd column from the matrix,
then we calculate determinant of remaining matrix. The determinant of remaining matrix is the minor of a12. For details and better clarification, go through the files present below.
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