For what value of λ are the vectors 
perpendicular to each other?
Given 
and 
For two vectors to be perpendicular, the angle between them must be 
or 
We know that cos 90=0
=2-2λ+3
=5-2λ
By scalar product, 
5-2λ=0
1
For what value of λ are the vectors perpendicular to each other?
Given and
For two vectors to be perpendicular, the angle between them must be or
We know that cos 90=0
=2-2λ+3
=5-2λ
By scalar product,
5-2λ=0