Homework Answers
2. Partitioned matrices A matrix A is a (2 x 2) block matrix if it is...
2. Partitioned matrices A matrix A is a (2 x 2) block matrix if it is represented in the form [ A 1 A2 1 A = | A3 A4 where each of the A; are matrices. Note that the matrix A need not be a square matrix; for instance, A might be (7 x 12) with Aj being (3 x 5), A2 being (3 x 7), A3 being (4 x 5), and A4 being (4 x 7). We can...
linear algebra 1. Suppose that A, B, C, D, E are matrices of the following sizes:...
linear algebra
1. Suppose that A, B, C, D, E are matrices of the following sizes: А B с D E (4 x 5) (4 x 4) (5 x 2) (4 x 2) (5 x 4) Determine whether the expression is defined and, if so, the size of the resulting matrix. (a) EAC (b) AC + D (c) E(5B + A) Bi and S(T) = Dr. Is the (d) Suppose T, S are matrix transformations defined by T(T) composition To...
Need help!! 1) Let A, B, C, and D be the matrices defined below. Compute the...
Need help!!
1) Let A, B, C, and D be the matrices defined below. Compute the matrix expressions when they are defined; if an expression is undefined, explain why. [2 0-1] [7 -5 A= .B -5 -4 1 C- ,D= (-5 3] [I -3 a) AB b) CD c) DB d) 3C-D e) A+ 2B 2) Let A and B be the matrices defined below. 4 -2 3) A=-3 0, B= 3 5 a) Compute AB using the definition of...
(1 point) Suppose that: -4 -2 -1 -3 -3 A= 1 and B = -1 -3...
(1 point) Suppose that: -4 -2 -1 -3 -3 A= 1 and B = -1 -3 -1 -4 4 4 -3 -5 Given the following descriptions, determine the following elementary matrices and their inverses. e. The elementary matrix Es multiplies the second row of B by 1/2 Es = f. The elementary matrix Es multiplies the third row of B by -6. Eg = g. The elementary matrix E, switches the first and third rows of B. ,E,= h. The...
(1 point) Suppose that A, B, and Care 5 x 5,5 X 6, and 6 x...
(1 point) Suppose that A, B, and Care 5 x 5,5 X 6, and 6 x 9 matrices, respectively. Determine which of the following products are defined. (a) BC Answer: undefined (b) CB Answer: undefined (c) AB Answer: 5x5 (d) 42 Answer: 5x5 Note: 1) For those defined, enter the size of the resulting matrix (e.g. 3 x 4 with spaces between the numbers and x). ii)For those undefined, enter undefined.
Let A, B, C, and D be matrices with the following sizes: A, 5×3 B, 3×2...
Let A, B, C, and D be matrices with the following sizes: A, 5×3 B, 3×2 C, 3×5 D, 1×3 Which of the following matrix operations are defined? i) AB (ii) A + 1 4 C (iii) DC
(1 point) If A and B are 3 × 9 matrices, and C is a 4...
(1 point) If A and B are 3 × 9 matrices, and C is a 4 × 3 matrix, which of the following are defined? ■A. AB В, В-С С. СВ ■ E. ATQT Preview My An Submit Answers swers
Please answer the parts below, thank you. A) B) C) (1 point) If A and B...
Please answer the parts below, thank you.
A)
B)
C)
(1 point) If A and B are 6 x 9 matrices, and C is a 8 x 6 matrix, which of the following are defined? A. B - A B. CB + 2A C. B-C D. CB E. AB (1 point) Parameterize the solutions to the following linear equation, and write your answer in vector form. -8x + 4y - 7z = -4 2 Solution: y + S +t. 2...
1 2 2 1 -X Find the determinant of the matrix as a formula in terms of x and y. Remember to use the correct syntax for...
1 2 2 1 -X Find the determinant of the matrix as a formula in terms of x and y. Remember to use the correct syntax for a formula 0 0 1 -3 -x X Question 4: (2 points) a b c fis 3, find the determinant of these matrices: If the determinant of the matrix M = d e (gh k) b a C (a) 7 d 7e 7f h k -E. b-2 e c - 2 f a...
Please answer this using matrices quick thanks 1. Let A be a 3 x 3 matrix...
Please answer this using matrices quick thanks
1. Let A be a 3 x 3 matrix with det (A) 4, and suppose the matrix B is obtained from A by performing the following elementary row/column operations to A: -a Ra+ Rs For what value(s) of a does det(B)-6?
2. Partitioned matrices A matrix A is a (2 x 2) block matrix if it is represented in the form [ A 1 A2 1 A = | A3 A4 where each of the A; are matrices. Note that the matrix A need not be a square matrix; for instance, A might be (7 x 12) with Aj being (3 x 5), A2 being (3 x 7), A3 being (4 x 5), and A4 being (4 x 7). We can...
linear algebra
1. Suppose that A, B, C, D, E are matrices of the following sizes: А B с D E (4 x 5) (4 x 4) (5 x 2) (4 x 2) (5 x 4) Determine whether the expression is defined and, if so, the size of the resulting matrix. (a) EAC (b) AC + D (c) E(5B + A) Bi and S(T) = Dr. Is the (d) Suppose T, S are matrix transformations defined by T(T) composition To...
Need help!!
1) Let A, B, C, and D be the matrices defined below. Compute the matrix expressions when they are defined; if an expression is undefined, explain why. [2 0-1] [7 -5 A= .B -5 -4 1 C- ,D= (-5 3] [I -3 a) AB b) CD c) DB d) 3C-D e) A+ 2B 2) Let A and B be the matrices defined below. 4 -2 3) A=-3 0, B= 3 5 a) Compute AB using the definition of...
(1 point) Suppose that: -4 -2 -1 -3 -3 A= 1 and B = -1 -3 -1 -4 4 4 -3 -5 Given the following descriptions, determine the following elementary matrices and their inverses. e. The elementary matrix Es multiplies the second row of B by 1/2 Es = f. The elementary matrix Es multiplies the third row of B by -6. Eg = g. The elementary matrix E, switches the first and third rows of B. ,E,= h. The...
(1 point) Suppose that A, B, and Care 5 x 5,5 X 6, and 6 x 9 matrices, respectively. Determine which of the following products are defined. (a) BC Answer: undefined (b) CB Answer: undefined (c) AB Answer: 5x5 (d) 42 Answer: 5x5 Note: 1) For those defined, enter the size of the resulting matrix (e.g. 3 x 4 with spaces between the numbers and x). ii)For those undefined, enter undefined.
(1 point) If A and B are 3 × 9 matrices, and C is a 4 × 3 matrix, which of the following are defined? ■A. AB В, В-С С. СВ ■ E. ATQT Preview My An Submit Answers swers
Please answer the parts below, thank you.
A)
B)
C)
(1 point) If A and B are 6 x 9 matrices, and C is a 8 x 6 matrix, which of the following are defined? A. B - A B. CB + 2A C. B-C D. CB E. AB (1 point) Parameterize the solutions to the following linear equation, and write your answer in vector form. -8x + 4y - 7z = -4 2 Solution: y + S +t. 2...
1 2 2 1 -X Find the determinant of the matrix as a formula in terms of x and y. Remember to use the correct syntax for a formula 0 0 1 -3 -x X Question 4: (2 points) a b c fis 3, find the determinant of these matrices: If the determinant of the matrix M = d e (gh k) b a C (a) 7 d 7e 7f h k -E. b-2 e c - 2 f a...
Please answer this using matrices quick thanks
1. Let A be a 3 x 3 matrix with det (A) 4, and suppose the matrix B is obtained from A by performing the following elementary row/column operations to A: -a Ra+ Rs For what value(s) of a does det(B)-6?
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