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Mathematics
Mathematics
Problem
Which of the following matrices is the inverse of
C
=
(
4
−
3
2
−
1
)
C=\begin{pmatrix}4&-3\\2&-1\end{pmatrix}
C
=
(
4
2
−
3
−
1
)
? a)
(
−
1
3
−
2
4
)
\begin{pmatrix}-1&3\\-2&4\end{pmatrix}
(
−
1
−
2
3
4
)
b)
(
−
1
2
3
2
−
1
2
)
\begin{pmatrix}-\dfrac12&\dfrac32\\-1&2\end{pmatrix}
(
−
2
1
−
1
2
3
2
)
c)
(
1
2
−
3
2
1
−
2
)
\begin{pmatrix}\dfrac12&-\dfrac32\\1&-2\end{pmatrix}
(
2
1
1
−
2
3
−
2
)
d)
(
−
1
4
3
4
−
1
2
1
)
\begin{pmatrix}-\dfrac14&\dfrac34\\-\dfrac12&1\end{pmatrix}
−
4
1
−
2
1
4
3
1
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