Question
Question: Which of the following is always correct...
Which of the following is always correct
A
B' A B is symmetric if A is symmetric
B
B' A B is symmetric if A is skew Symmetric
C
B' A B is skew symmetric if A is symmetric
D
None of these
Answer
B' A B is symmetric if A is symmetric
Explanation
Solution
(B' A B)' = B'. A' (B')' = B' A' B
if A is symmetric
then (B'. A . B)' = B'. A . B
hence symmetric