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Mathematics
Problem
For the matrices
A
=
(
2
−
1
3
4
)
A=\begin{pmatrix}2 & -1\\ 3 & 4\end{pmatrix}
A
=
(
2
3
−
1
4
)
and
I
=
(
1
0
0
1
)
I=\begin{pmatrix}1 & 0\\ 0 & 1\end{pmatrix}
I
=
(
1
0
0
1
)
, what is the value of
A
I
−
I
A
AI - IA
A
I
−
I
A
? a)
A
−
I
2
A-I_{2}
A
−
I
2
b)
2
A
2A
2
A
c)
O
2
O_{2}
O
2
d)
A
A
A
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