If A, B are symmetric matrices of same order then the matrix AB-BA is a
Symmetric matrix
Harmitian matrix
Skew-symmetric matrix
Skew-Harmitian matrix
If A is a symmetric matrix, then matrix M'AM is
[MP PET 1990]
Choose the correct answer in the following question: If A,B are symmetric matrices of same order, then AB-BA is a (a)skew-symmetric matrix (b)symmetric matrix (c)zero matrix (d)identity matrix