РАП ИДЗ 1.1 вариант 17

DHS - 1.1
№ 1.17. To find the determinant of the minors and cofactors.
Calculate the determinant of: a) expanding its line of element i; b) expanding it on
j elements of the post; c) obtaining a pre-zeros in the i line. i = 3; j = 1.
№ 2.17. Given two matrices A and B. Find: a) AB; b) VA; a) A⁻¹; d) AA⁻¹; d) A⁻¹A.

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