If \( A \) is a square matrix such that \( A A^{T}=I \) and \( |A|=1 \)
, then \( |A-I|= \)
W.....
If \( A \) is a square matrix such that \( A A^{T}=I \) and \( |A|=1 \)
P
, then \( |A-I|= \)
W.
(1) 0
(2) 1
(3) -1
(4) None of these
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