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Mathematics
Mathematics
Problem
Let A be a square matrix of order 3 whose elements are real numbers and
a
d
j
(
a
d
j
(
A
)
)
=
adj(adj(A)) =
a
d
j
(
a
d
j
(
A
))
=
[
16
0
−
3
0
4
0
0
3
4
]
\begin{bmatrix} 16 & 0 & -3 \\ 0 & 4 & 0 \\ 0 & 3 & 4 \end{bmatrix}
16
0
0
0
4
3
−
3
0
4
then absolute value of
T
r
(
A
−
1
)
Tr(A^{-1})
T
r
(
A
−
1
)
is
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