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JEE Main Math Class 12 Matrices Part 1 Questions
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© examsnet.com
Question : 2
Total: 100
Let
x
,
y
,
z
>
1
and
A
=
[
1
log
x
y
log
x
z
log
y
x
2
log
y
z
log
z
x
log
z
y
3
]
.
Then
|
adj
(
adj
A
2
)
|
is equal to
[25-Jan-2023 Shift 1]
6
4
2
8
4
8
2
4
Validate
Solution:
|
A
|
=
1
log
x
⋅
log
y
⋅
log
z
|
log
x
log
y
log
z
log
x
2
log
y
log
z
log
x
log
y
3
log
z
|
=
2
⇒
|
adj
(
adj
A
2
)
|
=
|
A
2
|
4
=
2
8
© examsnet.com
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