1.

Find the position vector of a point R which divides the line joing two points Pand Q whose position vectors are hati+2hatj-hatkand-hati+hatj+hatk repectively , in the ratio 2:1 (i) nternally (ii) externally

Answer»


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


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