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Find a vector perpendicular to $Oy$ axis. Knowing that $v\cdot v_1=8$ and $v\cdot v_2=-3$, where $v_1=(3,1,-2)$ and $v_2=(-1,1,1)$

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    Are you aware of the practice of accepting answers to your question? (See [this meta question](http://meta.math.stackexchange.com/questions/3399).)2012-07-27
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    Yes, but I don´t understand your commentaire. Was I rude with someone here. If I was, I´m sorry about it.2012-07-28

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