Option 3 1.1 Collection idz Ryabushko (www.idz.kz)

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idz - 1.1
Number 1.3. To find the determinant of minors and cofactors.
Calculate the determinant of: a) expanding it over the elements row i; b) expanding his
elements of the j column; c) obtaining a pre-zero in the i line. i = 4; j = 1.
Number 2.3. Given two matrices A and B. Find: a) AB; b) VA; c) A-1; d) AA-1; d) A-1A.

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