Homework Answers
1. True, The reduced row echelon form of a singular matrix has a
row of zeros. ![eg A [:2) lAlco (singular) R2 R2- RI [...] Since all the element in last row is zero so the statement is true.](http://img.homeworklib.com/questions/295efb00-ee88-11eb-9e30-37a7713f0036.png?x-oss-process=image/resize,w_560)
2.True ,Subsets of linearly independent sets are linearly
independent.
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The reduced row echelon form of a singular matrix has a row of zeros. Select one:...
(a) In some cases, a matrix may be row reduced to more than one matrix in...
(a) In some cases, a matrix may be row reduced to more than one matrix in reduced echelon form, using different sequences of row operations. Is this statement true or false? O A. The statement is true. The echelon form of a matrix is always unique, but the reduced echelon form of a matrix might not be unique. O B. The statement is false. Each matrix is row equivalent to one and only one reduced echelon matrix. O C. The...
4. Give the row-echelon form and the reduced row-echelon form of the matrix: A = 11...
4. Give the row-echelon form and the reduced row-echelon form of the matrix: A = 11 2 0 -1 12 1 -2 51 1 -1 0 1] row-echelon form: reduced row-echelon form:
3 3 -16 -2 -5 12 4 1-12 Find the reduced row echelon form of the...
3 3 -16 -2 -5 12 4 1-12 Find the reduced row echelon form of the matrix B 0 0 0 0 0 0 -16 12 -5 1, and v3 = 1-12 Let Vi 4 17 5 Decide whether the following statements are true or false. 2 The vectors vi, V2, and v span R. The vectors vi , V2 , and V3 are linearly independent. 3 3-16 В 1-2-5 4 -1 -12 Find the reduced row echelon form of...
6. If the reduced row echelon form of the matrix of coefficients of a system of...
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,...
Use elementary row operations to reduce the given matrix to row echelon form and reduced row...
Use elementary row operations to reduce the given matrix to row
echelon form and reduced row echelon form. Please note when it hits
REF and RREF. Thank you!
6. + 0/2 points Previous Answers PooleLinAlg4 2.2.014. Use elementary row operations to reduce the given matrix to row echelon form and reduced row echelon form. [-2 -4 11 | -5 -10 26 Li 2 -5] (a) row echelon form 2 1 -1172 -3/40 0 1 (b) reduced row echelon form 0...
8. Let A be a 5 x 4 matrix such that its reduced row echelon form...
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
Section 1.2 Row Echelon Form: Problem 6 Previous Problem Problem ListNext Problem (1 point) Solve the system by finding the reduced row-echelon form of the augmented matrix. reduced row-echelon form...
Section 1.2 Row Echelon Form: Problem 6 Previous Problem Problem ListNext Problem (1 point) Solve the system by finding the reduced row-echelon form of the augmented matrix. reduced row-echelon form How many solutions are there to this system? A. None B. Exactly C.Exactly 2 D. Exactly 3 E. Infinitely many F. None of the above If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter in the answer blank for...
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 o...
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...
Use Gaussian elimination to find a row echelon form (not reduced row echelon form) of the...
Use Gaussian elimination to find a row echelon form (not reduced row echelon form) of the augmented matrix for the following system, and then use it to determine for which value of a the following system has infinitely many solutions. x - 2y + 4z = 1 * +3y + z = -9 2x - 3y + az = 0
Question 3 please answer clearly. A matrix A and its reduced row echelon form are given...
Question 3
please answer clearly.
A matrix A and its reduced row echelon form are given as follows: [ 2 1 3 41 | 1 2 0 2 A= 3 21 12 | 3 -1 7 9 18 7 9 -4 and rref(A) = [ 1 0 201 0 1 -1 0 0 0 0 1 0 0 0 0 | 0 0 0 0 Use this information to answer the following questions. (a) Is the column vector u= in...
(a) In some cases, a matrix may be row reduced to more than one matrix in reduced echelon form, using different sequences of row operations. Is this statement true or false? O A. The statement is true. The echelon form of a matrix is always unique, but the reduced echelon form of a matrix might not be unique. O B. The statement is false. Each matrix is row equivalent to one and only one reduced echelon matrix. O C. The...
4. Give the row-echelon form and the reduced row-echelon form of the matrix: A = 11 2 0 -1 12 1 -2 51 1 -1 0 1] row-echelon form: reduced row-echelon form:
3 3 -16 -2 -5 12 4 1-12 Find the reduced row echelon form of the matrix B 0 0 0 0 0 0 -16 12 -5 1, and v3 = 1-12 Let Vi 4 17 5 Decide whether the following statements are true or false. 2 The vectors vi, V2, and v span R. The vectors vi , V2 , and V3 are linearly independent. 3 3-16 В 1-2-5 4 -1 -12 Find the reduced row echelon form of...
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,...
Use elementary row operations to reduce the given matrix to row
echelon form and reduced row echelon form. Please note when it hits
REF and RREF. Thank you!
6. + 0/2 points Previous Answers PooleLinAlg4 2.2.014. Use elementary row operations to reduce the given matrix to row echelon form and reduced row echelon form. [-2 -4 11 | -5 -10 26 Li 2 -5] (a) row echelon form 2 1 -1172 -3/40 0 1 (b) reduced row echelon form 0...
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
Section 1.2 Row Echelon Form: Problem 6 Previous Problem Problem ListNext Problem (1 point) Solve the system by finding the reduced row-echelon form of the augmented matrix. reduced row-echelon form How many solutions are there to this system? A. None B. Exactly C.Exactly 2 D. Exactly 3 E. Infinitely many F. None of the above If there is one solution, give its coordinates in the answer spaces below. If there are infinitely many solutions, enter in the answer blank for...
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...
Use Gaussian elimination to find a row echelon form (not reduced row echelon form) of the augmented matrix for the following system, and then use it to determine for which value of a the following system has infinitely many solutions. x - 2y + 4z = 1 * +3y + z = -9 2x - 3y + az = 0
Question 3
please answer clearly.
A matrix A and its reduced row echelon form are given as follows: [ 2 1 3 41 | 1 2 0 2 A= 3 21 12 | 3 -1 7 9 18 7 9 -4 and rref(A) = [ 1 0 201 0 1 -1 0 0 0 0 1 0 0 0 0 | 0 0 0 0 Use this information to answer the following questions. (a) Is the column vector u= in...
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