If and A = A^T, then

If A is a square matrix, then AA is a

If A and B are symmetric matrices, then ABA is

If A is 3 × 4 matrix and B is a matrix such that A^TB and BA^T are both defined. Then, B is of the type

If A = [a_ij] is a square matrix of even order such that a_ij = i² – j², then