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If A is any square matrix such that A+I/...

If A is any square matrix such that `A+I/2` and `A-I/2` are orthogonal matrices, then

A

A is symmetric

B

A is skew-symmetric

C

`A^(2)=(3l)/(2)`

D

`A^(2)=(-3l)/(2)`

Text Solution

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The correct Answer is:
B, D
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