Question: a. An n ( n determinant is defined by determinists of (n - 1) ( (n - 1) submatrices? b. The (i, j)-cofactor of matrix

a. An n ( n determinant is defined by determinists of (n - 1) ( (n - 1) submatrices?
b. The (i, j)-cofactor of matrix A is the matrix Aij obtained by deleting from A its I th row and j th column?

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