MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Question: how does mathematica determine the coefficient of the

  • To: mathgroup at smc.vnet.net
  • Subject: [mg84875] Question: how does mathematica determine the coefficient of the
  • From: "gogoant06 at yahoo.com.hk" <gogoant06 at yahoo.com.hk>
  • Date: Thu, 17 Jan 2008 07:00:30 -0500 (EST)

For an example:

Input:
test = {{1, 2}, {2, 1}};
Eigensystem[test]

Output:
{{3, -1}, {{1, 1}, {-1, 1}}}

Why aren't the eigenvectors be {-1,-1}, {1,-1}...?
Is there some rule for mathematica to choose out the eigenvectors?


  • Prev by Date: Re: Version 6 graphics can be painfully slow
  • Next by Date: Re: What is the algorithm Mathematica uses to detrmine the automatic range for plotting?
  • Previous by thread: Re: Can you minimize a notebook window from a notebook in Version
  • Next by thread: Re: Question: how does mathematica determine the coefficient of the