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Old 08-14-2012, 01:43 PM   #6
Bionic Poster
Join Date: Oct 2005
Posts: 34,456

Originally Posted by toly View Post
Two thin orthogonal lines define the plane perpendicular to the string bed. The arbitrary vector VR lies in that plane. Think a little bit please!
That is what I am saying. If VR lies in that plane perpendicular to the strings, it is not an arbitrary vector, so it cannot be used to describe general situations.
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