Question
Let 
Find a vector 
which is perpendicular to both 
Solution
Let
Since
is perpendicular to 
and
...(2)Again,
...(3)Subtracting (3) from (1), we get,
...(4) Multiply (2) by 1 and (3) by 5, we get.
Adding,
...(5)
Subtracting it from (4), we get,
From (5),
From (1),
