MATRICES

If A and B are symmetric matrices of same order, then AB - BA is

• Skew-symmetric Matrix

• Symmetric Matrix

• Zero Matrix

• Identity Matrix

If a matrix A is both symmetric and skew-symmetric then

• A is a diagonal matrix

• A is a square matrix

• A is a zero matrix

• None of these

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d

• a

• b

• c

• d