VectorHard
Question
Let
and
be three vectors. A vector
in the plane of
and
, whose projection on
is 1/√3 , is given by
and
be three vectors. A vector
in the plane of
and
, whose projection on
is 1/√3 , is given byOptions
A.

B.

C.

D.

Solution


projection of
on 

⇒ λ + μ - λ + μ - λ - μ = 1 ⇒ μ - λ = 1 ⇒ λ = μ - 1


At μ = 2,

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