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Mathematics
Mathematics
Problem
Let
A
(
k
)
=
(
k
2
3
k
−
5
)
A(k)=\begin{pmatrix}k & 2\\3 & k-5\end{pmatrix}
A
(
k
)
=
(
k
3
2
k
−
5
)
. For which one of the following values of
k
k
k
is
A
(
k
)
A(k)
A
(
k
)
singular? a)
k
=
0
k = 0
k
=
0
b)
k
=
5
k = 5
k
=
5
c)
k
=
6
k = 6
k
=
6
d)
k
=
2
k = 2
k
=
2
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