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Linear Algebra and its Applications Ch. 3 Exam Questions and answers
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Linear Algebra and its Applications Ch. 3 Exam Questions and answers An n x n determinant is defined by determinants of (n - 1) x (n - 1) submatrices. - True. The (i, j)-cofactor of a matrix A is the matrix A_ij obtained by deleting from A its ith row and jth column. - False. This is the minor. Have to multiply by (-1)^(i+j). The cofactor expansion of det A down a column is equal to the cofactor expansion along a row. - True.
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