1.

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are hati+2hatj-hatk and -hati+hatj+hatk respectively, in the ratio 2 : 1. (i) internally(ii) externally

Answer»


Answer :(i) `R=-(1)/(3)hati+(4)/(3)HATJ+(1)/(3)hatk`
(ii) `=-3hati+3hatk`


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