Discussion Forum



1)

Three vectors P, Q, and R  are shown in the figure. Let S be any point on the vector R. The distance between the point  P and S  is b[R]. The general relation among vectors P, Q and S is

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A) S=(1−b2)P+bQ

B) S=(b−1)P+bQ

C) S=(1−b)P+bQ

D) S=(1−b)P+b2Q

Answer:

Option C

Explanation:

S=P+bR=P+b(Q-P)
= P(1-b)+bQ