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Mathematics
Mathematics
Problem
Let
A
A
A
be a square matrix. Then, a.
A
+
A
T
A + A^T
A
+
A
T
is a symmetric matrix b.
A
−
A
T
A - A^T
A
−
A
T
is a skew-symmetric matrix. c.
A
A
T
AA^T
A
A
T
and
A
T
A
A^T A
A
T
A
are symmetric matrices.
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