RAP IDZ 1.1 option 27

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IDZ - 1.1
No. 1.27. For this determinant, find the minors and algebraic complements.
Calculate the determinant: a) by expanding it along the elements of the i row; b) expanding it along the elements of j column; c) having received zeros in i row. i = 3; j = 4.
No. 2.27. Two matrices A and B are given. Find: a) AB; b) VA; c) А⁻¹; d) АА⁻¹; e) А⁻¹А.

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