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Let vec a and vec b be the position vect...

Let `vec a` and `vec b` be the position vectors of the points A and B. Prove that the position vectors of the points which trisects the line segment AB are `(veca+2vecb)/(3)and (vecb+2veca)/(3)`.

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The correct Answer is:
`=(vecb + 2veca)/(3)`
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