hotcommodity Posted May 1, 2007 Share Posted May 1, 2007 If I have z= ||v||u + ||u||v, can I say that (z/uv) = (||v||/v) + (||u||/u) ? Link to comment Share on other sites More sharing options...
Bignose Posted May 1, 2007 Share Posted May 1, 2007 Assuming that those bold letters are vectors, division as you have used it there really isn't defined. i.e. if u = [1 0 13] and if v = [-4 7 2] what is u/v or v/u ? See: http://mathworld.wolfram.com/VectorDivision.html Link to comment Share on other sites More sharing options...
Dave Posted May 1, 2007 Share Posted May 1, 2007 Bignose is quite correct; vector division isn't defined in any form so you can't use your stated "identity". Link to comment Share on other sites More sharing options...
hotcommodity Posted May 1, 2007 Author Share Posted May 1, 2007 Yeah, I see what I did wrong. I should have divided by the norms instead. Thanks for the replies Link to comment Share on other sites More sharing options...
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