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Question : 95 of 150
Marks:
+1,
-0
Solution:
The line of intersection of the planes
r⋅(3−+)=1 and
r⋅(+4−2)=2 is perpendicular to each of the normal vectors
n1=3−+ and
n2=+4−2.
∴‌‌ The line is parallel to the vector
n1×n2 ∴‌‌n1×n2‌=||‌=−2+7+13
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