If \( A \) is symmetric and \( B \) skew-symmetric matrix and \( A+B \) is non-singular and \( C...

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If \( A \) is symmetric and \( B \) skew-symmetric matrix and \( A+B \) is non-singular and \( C=(A+B)^{-1}(A-B) \).
\( \mathrm{P} \)
\( C^{T} A C \) equals to
W
(a) \( A+B \)
(b) \( A-B \)
(c) \( A \)
(d) \( B \)
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