'Elementary product' presentation slideshows

Chapter 2

Chapter 2. Determinants. The Determinant Function. The 2 ? 2 matrix is invertible if ad-bc ?0. The expression ad-bc occurs so frequently that it has a name; it is called the determinant of the matrix A and is denoted by the symbol det( A ).

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Section 2.4

Section 2.4. A Combinatorial Approach to Determinants. PERMUTATIONS. A permutation of the integers {1, 2, 3, . . . , n } is an arrangement of these integers in some order without omissions or repetitions. Example : (2, 5, 1, 3, 4) is a permutation of the integers {1, 2, 3, 4, 5}.

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