Let aequals=left bracket start 3 by 3 matrix 1st row 1st column 1 2nd column negative 3 3rd column negative 2 2nd row 1st column negative 4 2nd column 4 3rd column 0 3rd row 1st column 2 2nd column 2 3rd column 4 endmatrix right bracket 1 −3 −2 −4 4 0 2 2 4 and bequals=left bracket start 3 by 1 matrix 1st row 1st column b 1 2nd row 1st column b 2 3rd row 1st column b 3 endmatrix right bracket b1 b2 b3 . show that the equation axequals=b does not have a solution for all possible b, and describe the set of all b for which axequals=b does have a solution.