Vectors Problem

Tiffany121

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Sep 11, 2019
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Hi, does anyone know how to do Qn 5b? I've found the answer for part a, but I can't seem to get the answer for b. The correct answer given was (1/2, 13/2, 0) but I can't work my way to it. Thanks!
 

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1) Please show your work, not just the final result.
2) Please show your efforts, even lacking a final result.
3) Can you find the Position Vector of R?
 
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