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JEE Mains 30-Jan-2023 Shift 2 Solved Paper

Section: Mathematics
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Question : 72 of 90
 
Marks: +1, -0
Let λ∈ℝ,
→
a
=λ
^
i
+2
^
j
−3
^
k
,
→
b
=
^
i
−λ
^
j
+2
^
k
 .
If ((
→
a
+
→
b
)×(
→
a
×
→
b
))×(
→
a
−
→
b
)=8
^
i
−40
^
j
−24
^
k
 , then |λ(
→
a
+
→
b
)×(
→
a
−
→
b
)|2 is equal to
[30-Jan-2023 Shift 2]
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