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I wonder if it is possible to switch to parametric coordinates, either on a curve or on a surface, given an arbitrary origin and arbitrary u or (u,v) unit vectors?<br><br> <br /><hr />Nouveau! Découvrez le Windows phone Samsung Omnia II disponible chez SFR. <a href='http://clk.atdmt.com/FRM/go/175819072/direct/01/' target='_new'>Cliquez ici</a></body>
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