(a) In some cases, a matrix may be row reduced to more than one matrix in...
The reduced row echelon form of a singular matrix has a row of zeros. Select one: True False Subsets of linearly independent sets are linearly independent. Select one: True False
IT a) If one row in an echelon form for an augmented matrix is [o 0 5 o 0 b) A vector bis a linear combination of the columns of a matrix A if and only if the c) The solution set of Ai-b is the set of all vectors of the formu +vh d) The columns of a matrix A are linearly independent if the equation A 0has If A and Bare invertible nxn matrices then A- B-'is the...
6. If the reduced row echelon form of the matrix of coefficients of a system of n linear equations in n unknowns is not the identity, then the system is inconsistent. (a) Always true (b) Sometimes true (c) Never true, i.e., false (d) None of the above 7. If a, b and c are integers and a = 0, then the matrix " I c v2 ) is nor is nonsingular. (a) Always true (b) Sometimes true (c) Never true,...
Determine if the statements are true or false. 1. If A and B are nxn matrices and if A is invertible, then ABA-1 = B. ? A 2. If A and B are real symmetric matrices of size nxn, then (AB)? = BA 3. If A is row equivalent to B, then the systems Ax = 0 and Bx = 0 have the same solution. ? A 4. If, for some matrix A and some vectors x and b we...
8. Let A be a 5 x 4 matrix such that its reduced row echelon form has 4 pivot positions (leading entries). Which of the following statements is TRUE? a) The linear transformation T : R4 → R5 defined by T(X) = AX is onto. b) AX = 0 has a unique solution. c) Columns of A are linearly dependent. d) AX b is consistent for every vector b in R
5. Suppose L is a unit-lower-triangular matrix. (a) What can you say about the reduced row echelon form R of L? Be as specific as possible. (b) If you perform the elementary row operations on I that are used to transform L to R, what matrix do you get? Write your answer in terms of I, R, and/or L and basic matrix operations (addition, multiplication, transpose, inverse, etc.). (c) If you perform the same elementary row operations to a matrix...
3. (Auqmented Matrices, Reduced Row BEchelon Form). In each of the following, the augmented matrix is in reduced row echelon form. In each case, find the solution set to the corresponding linear system. 1 0 010 1-10 0-5 11 0-9 o) o1 0 (ii). 01 -6 (008 1 -59 0| 2 0 1 0-7 17 0318 (iv)o o 1 9 -5 00 1-2 (v)0 00 0(vi). 1
Consider the reduced row-echelon form of the augmented matrix of some system of linear equation in x1, x2, x3, x4, x5, x6 given by 1 0 0 0 -1 0 -16 0 1 0 0 -1 20 0 0 1 0 -1 1 1 1 12 0 0 0 1 -1 24 0 0 0 0 0 0 0 Suppose that the solutions satisfy the constrains x1 > 0, x2 > 0, X3 > 0, x4 > 0, X5 >...
Linear Algebra Please list whether the following is True or False: (16) Let A be an m × n matrix. If each column of A has a pivot, then the columns of A can span Rn (17) (AB)T ATBT (18) The product of two diagonal matrices of the same size is a diagonal matrix (19) If AB- AC, then B- C. (20) Every matrix is row equivalent to a unique matrix in row reduced echelon form
12. [-13.22 Points] DETAILS LARLINALG8 3.2.038. ASK YOUR TEACHER Determine whether ebch statement is true or false. If a statement is true, give a reason or cite an appropriate statement from the text. If a statement is false, provide an example that shows the statement is not true in all cases or cite an appropriate statement from the text. (a) Adding a multiple of one column of a square matrix to another column changes only the sign of the determinant....