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Question : 8
Total: 29
Write the value of p for which
= 3
+ 2
+ 9
and
=
+ p
+ 3
are parallel vectors.
Solution:
Two vectors
and
are parallel
= 3
+ 2
+ 9
and
=
+ p
+ 3
= λ
So3
+ 2
+ 9
= λ (
+ p
+ 3
)
⇒3
+ 2
+ 9
= λ
+ λ p
+ λ 3
⇒ λ = 3 , pλ = 2 and 9 = 3λ
⇒ p =
So
⇒
⇒ λ = 3 , pλ = 2 and 9 = 3λ
⇒ p =
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