If \( A \) is a square matrix such that \( A \Lambda^{T}=I=A^{T} A \), then \( A \) is (A) a sym...

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Sym (2015)
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If \( A \) is a square matrix such that \( A \Lambda^{T}=I=A^{T} A \), then \( A \) is
(A) a symumetric matrix
(B) a diagonal matrix
(C) a skew-symmetric matrix
(D) an orthogonal matrix.
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