If A and B are symmetric metrices of same order, then AB - BA is a
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) - Skew symmetric matrix
Given $A^T=A,B^T=B$
so $P=(AB-BA)$
$P^T=(AB-BA)^T=(AB)^T-(BA)^T$
$=B^TA^T-A^TB^T$
$=BA-AB$
$=-(AB-BA)=-P$
$P^T=-P$
skew symmetric