Given
A
=
[
4
−
2
6
1
]
\displaystyle {A}={\left[\begin{array}{cc} {4}&-{2}\\{6}&{1}\end{array}\right]}
A
=
[
4
6
−
2
1
]
, find
A
−
1
\displaystyle {A}^{{-{1}}}
A
−
1
. If
A
−
1
\displaystyle {A}^{{-{1}}}
A
−
1
does not exist, write "DNE" in each box.
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Enter each element of the matrix as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers