Finite Mathematics Quiz
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MATRICES AND LINEAR ALGEBRA TOOLS
Question 1
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Let
A
=
(
3
1
4
2
)
A = \begin{pmatrix} 3 & 1 \\ 4 & 2 \end{pmatrix}
A
=
(
3
4
1
2
)
and
I
I
I
be the
2
×
2
2 \times 2
2
×
2
identity matrix. Find the value of the scalar
k
k
k
such that
A
2
−
5
A
=
k
I
A^2 - 5A = kI
A
2
−
5
A
=
k
I
.
A
-5
B
-2
C
2
D
5
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