Question

Problem 9. (1 point) Let A be a 3 ! 2 matrix. Suppose we know that u = [2 \ -1] and v = [-1 \ -2] satisfy the equations Au = a and Av = b. Find a solution x to Ax = 4a + 5b. x = [ \ ] Problem 10. (1 point) Let A and B be symmetric n ! n matrices. For each of the following, determine whether the given matrix must be symmetric or could be non symmetric. ? 1. H = AB - BA ? 2. F = ABA ? 3. G = AB + BA ? 4. E = AB ? 5. C = A + B ? 6. D = A^2 Problem 11. (1 point) Find the inverse of AB if A^-1 = [-1 2 \ 3 -3] and B^-1 = [4 -4 \ 5 -3] (AB)^-1 = [ ]

          Problem 9. (1 point)
Let A be a 3 ! 2 matrix. Suppose we know that u = [2 \ -1] and v = [-1 \ -2] satisfy the equations Au = a and Av = b. Find a solution x to Ax = 4a + 5b.
x = [ \ ]
Problem 10. (1 point)
Let A and B be symmetric n ! n matrices. For each of the following, determine whether the given matrix must be symmetric or could be non symmetric.
? 1. H = AB - BA
? 2. F = ABA
? 3. G = AB + BA
? 4. E = AB
? 5. C = A + B
? 6. D = A^2
Problem 11. (1 point)
Find the inverse of AB if
A^-1 = [-1 2 \ 3 -3]
and
B^-1 = [4 -4 \ 5 -3]
(AB)^-1 = [ ]

Problem 9. (1 point)
Let A be a 3 ! 2 matrix. Suppose we know that u = [2 -1] and v = [-1 -2] satisfy the equations Au = a and Av = b. Find a solution x to Ax = 4a + 5b.
x = [ ]
Problem 10. (1 point)
Let A and B be symmetric n ! n matrices. For each of the following, determine whether the given matrix must be symmetric or could be non symmetric.
? 1. H = AB - BA
? 2. F = ABA
? 3. G = AB + BA
? 4. E = AB
? 5. C = A + B
? 6. D = A^2
Problem 11. (1 point)
Find the inverse of AB if
A^-1 = [-1 2 3 -3]
and
B^-1 = [4 -4 5 -3]
(AB)^-1 = [ ]

Added by Anna M.

Question

Please give Ace some feedback