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MathGroup Archive 2007

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vector representation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82748] vector representation
  • From: Vlad Luca <vldluca at yahoo.com>
  • Date: Tue, 30 Oct 2007 03:32:53 -0500 (EST)

Hi,
Having the vector r(a,b,c) = {a i, b j, c k} where i, j, k are the unit vectors and a, b, c arbitrary coefficients, I want to calculate, for example r(1,2,1) etc. Also I want to be able to add 2 or more of such vectors trough their indexes, for example: r(0,0,1) + r(1,2,3) and the sum to be expressed like this r(1,2,4) and not like {1i, 2j, 4k}.
Thank You in advance!


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