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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 `A(-2,1,3)` and `B(3,5,-2)` in the ratio `2 : 1` (i) internally (ii) externally.

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(i) `((4)/(3),(11)/(3),(-1)/(3))`
(ii) (8,9-7)
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