IDZ Ryabushko 1.1 Variant 16
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No.1. For this determinant, find the minors and algebraic complements. Calculate the determinant: a) by expanding it on the elements i of the line; b) expanding it into the elements of the j column; c) having previously obtained zeros in the i line. i =3; j = 2.
No.2. Two matrices A and B are given. Find: a) AB; b) BA; c) AA; d) AA⁻¹; d) А⁻¹А
No.2. Two matrices A and B are given. Find: a) AB; b) BA; c) AA; d) AA⁻¹; d) А⁻¹А
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