A) Any integer
B) Odd integer
C) Even integer
D) Cannot say anything
Correct Answer: B
Solution :
[b] \[(A+B)(A-B)=(A-B)(A+B)\] \[\Rightarrow AB=BA\] as A us symmetric and B is skew-symmetric \[{{(AB)}^{t}}=-AB\] \[\Rightarrow k\] is an odd integer.You need to login to perform this action.
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