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Mathematics
Problem
Which one of the following correctly states the condition under which a square matrix
A
A
A
of order
n
n
n
possesses an inverse? a)
trace
(
A
)
=
0
\operatorname{trace}(A)=0
trace
(
A
)
=
0
b)
det
(
A
)
≠
0
\det(A)\neq0
det
(
A
)
=
0
c)
det
(
A
)
=
0
\det(A)=0
det
(
A
)
=
0
d)
det
(
A
)
=
1
\det(A)=1
det
(
A
)
=
1
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