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CBSE XII
>>
Math
>>
Matrices
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Q)
Does
A
=
[
5
3
1
2
]
satisfy the equation
A
2
−
3
A
−
7
I
=
0
and hence find
A
−
1
N
o
,
i
t
d
o
e
s
n
o
t
;
A
−
1
=
−
1
/
7
[
−
2
−
1
1
5
]
Y
e
s
i
t
d
o
e
s
;
A
−
1
=
−
1
/
7
[
−
2
−
3
1
5
]
Y
e
s
i
t
d
o
e
s
;
A
−
1
=
−
1
/
14
[
−
2
−
3
1
5
]
N
o
i
t
d
o
e
s
n
o
t
;
A
−
1
=
−
1
/
7
[
−
2
−
3
1
5
]
Share
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