UPSC NDA II 2010 Mathematics Paper

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Question : 24 of 120
 
Marks: +1, -0
If
→
a
=
∧
i
−
∧
k

→
b
=x
∧
i
+
∧
j
+(1−x)
∧
k

→
c
=y
∧
i
+x
∧
j
+(1+x−y)
∧
k

then
→
a
.(
→
b
×
→
c
)
depends on
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