IDZ 1.1 - Option 21. Decisions Ryabushko AP
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1. For a given determinant Δ find minors and cofactors of the elements ai2, a3j. Calculate the determinant Δ: a) expanding it to the elements i-th row; b) expanding it to elements of the j-th column; c) obtaining a pre-zeros in the i-th row.
2. Given two matrices A and B. Find: a) AB; b) BA; a) A-1; g) AA-1; d) A-1A
2. Given two matrices A and B. Find: a) AB; b) BA; a) A-1; g) AA-1; d) A-1A
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
For the convenience of viewing IDZ solutions on smartphones, an additional file in PDF format is sent
For the convenience of viewing IDZ solutions on smartphones, an additional file in PDF format is sent
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