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WBJEE 2020 Math Solved Paper
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© examsnet.com
Question : 22 of 75
Marks:
+1
,
-0
Let
A
=
(
3
−
t
1
0
−
1
3
−
t
1
0
−
1
0
)
and det A = 5, then
t = 1
t = 2
t = –1
t = –2
Validate
Solution:
|
A
|
=
|
3
−
t
1
0
−
1
3
−
t
1
0
−
1
0
|
= 3 – t = 5, t = –2
© examsnet.com
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