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Unformatted text preview: Using the cofactor expansion with respect to the rst column of this matrix, the determinant is (-1) det 3-1 4 . Proceeding in this way, we see that the determinant of this matrix is the product of its diagonal entries, (-1) 3 4 =-12 . 2.5.17. Cofactor expansion with respect to the rst column gives det A = 0 . Thus the matrix is not invertible. 2.5.18. Answer: 1-1 0-1 1 1 . 1...
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This note was uploaded on 04/29/2008 for the course MATH 311 taught by Professor Anshelvich during the Spring '08 term at Texas A&M.
- Spring '08