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Find the position vector of a point R wh...

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

Text Solution

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The correct Answer is:
(i) -`(1)/(3)hati+(4)/(3)hatj+(1)/(3)hatk`
(ii) `-3hati+3hatk`
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