1 Linear Equations In Linear Algebra 2 Matrix Algebra 3 Determinants 4 Vector Spaces 5 Eigenvalues And Eigenvectors 6 Orthogonality And Least Squares 7 Symmetric Matrices And Quadratic Forms 8 The Geometry Of Vector Spaces 9 Optimization (online) 10 Finite-state Markov Chains (online) expand_more
3.1 Introduction To Determinants 3.2 Properties Of Determinants 3.3 Cramer's Rule, Volume, And Linear Transformations Chapter Questions expand_more
Problem 1PP: PRACTICE PROBLEMS 1. Compute |13122512045131068| in as few steps as possible. Problem 2PP: Use a determinant to decide if v1, v2, and v3 are linearly independent, when v1 = [579], v2 = [335],... Problem 3PP: Let A be an n n matrix such that A2 = I. Show that det A = 1. Problem 1E: Each equation in Exercises 14 illustrates a property of determinants. State the property. 1.... Problem 2E: Each equation in Exercises 14 illustrates a property of determinants. State the property. 2.... Problem 3E: Each equation in Exercises 14 illustrates a property of determinants. State the property. 3.... Problem 4E: Each equation in Exercises 14 illustrates a property of determinants. State the property. 4.... Problem 5E: Find the determinants in Exercises 510 by row reduction to echelon form. 5. |154145287| Problem 6E: Find the determinants in Exercises 510 by row reduction to echelon form. 6. |333344235| Problem 7E: Find the determinants in Exercises 510 by row reduction to echelon form. 7. |1302257435211123| Problem 8E: Find the determinants in Exercises 510 by row reduction to echelon form. 8. |13240125276331072| Problem 9E: Find the determinants in Exercises 510 by row reduction to echelon form. 9. |1130015410533323| Problem 10E: Find the determinants in Exercises 510 by row reduction to echelon form. 10.... Problem 11E: Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises... Problem 12E: Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises... Problem 13E: Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises... Problem 14E: Combine the methods of row reduction and cofactor expansion to compute the determinants in Exercises... Problem 15E: Find the determinants in Exercises 1520, where 15. |abcdef3g3h3i| Problem 16E: Find the determinants in Exercises 1520, where 16. |abc5d5e5fghi| Problem 17E: Find the determinants in Exercises 1520, where |abcdefghi|=7. 17. |a+db+ec+fdefghi| Problem 18E: Find the determinants in Exercises 1520, where |abcdefghi|=7. 18. |defabcghi| Problem 19E: Find the determinants in Exercises 1520, where |abcdefghi|=7. 19. |abc2d+a2e+b2f+cghi| Problem 20E: Find the determinants in Exercises 1520, where |abcdefghi|=7. 20. |abcd+3ge+3hf+3ighi| Problem 21E: In Exercises 2123, use determinants to find out if the matrix is invertible. 21. [260132392] Problem 22E: In Exercises 2123, use determinants to find out if the matrix is invertible. 22. [511132053] Problem 23E: In Exercises 2123, use determinants to find out if the matrix is invertible. 23. [2006175038600754] Problem 24E: In Exercises 2426, use determinants to decide if the set of vectors is linearly independent. 24.... Problem 25E: In Exercises 2426, use determinants to decide if the set of vectors is linearly independent. 25.... Problem 26E: In Exercises 2426, use determinants to decide if the set of vectors is linearly independent. 26.... Problem 27E: In Exercises 27 and 28, A and B are n n matrices. Mark each statement True or False. Justify each... Problem 28E: a. If three row interchanges are made in succession, then the new determinant equals the old... Problem 29E: Compute det B4 where B = [101112121] Problem 30E: Use Theorem 3 (but not Theorem 4) to show that if two rows of a square matrix A are equal, then det... Problem 31E: Show that if A is invertible, then detA1=1detA. Problem 32E: Suppose that A is a square matrix such that det A3 = 0. Explain why A cannot be invertible. Problem 33E: Let A and B be square matrices. Show that even though AB and BA may not be equal, it is always true... Problem 34E: Let A and P be square matrices, with P invertible. Show that det(PAP1) = det A. Problem 35E: Let U be a square matrix such that UTU = 1. Show that det U = 1. Problem 36E: Find a formula for det(rA) when A is an n n matrix. Problem 37E: Verify that det AB = (det A)(det B) for the matrices in Exercises 37 and 38. (Do not use Theorem 6.)... Problem 38E: Verify that det AB = (det A)(det B) for the matrices in Exercises 37 and 38. (Do not use Theorem 6.)... Problem 39E: Let A and B be 3 3 matrices, with det A = 3 and det B = 4. Use properties of determinants (in the... Problem 40E: Let A and B be 4 4 matrices, with det A = 3 and det B = 1. Compute: a. det AB b. det B5 c. det 2A... Problem 41E Problem 42E: Let A = [1001] and B = [abcd]. Show that det(A + B) = det A + det B if and only if a + d = 0. Problem 43E: Verify that det A = det B + det C, where A = [a11a12u1+v1a21a22u2+v2a31a32u3+v3], B =... Problem 44E: Right-multiplication by an elementary matrix E affects the columns of A in the same way that... format_list_bulleted