Q. 25.0( 1 Vote )

Find λ if the vec

Answer :

Given that,


Now, are coplanar,


if,


on expanding along R3 ,we get


0 (-3+ 1) - λ (-1-2) +3(-1-6) =0


λ +3 λ -21=0


3 λ=21


λ = 7


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