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MathGroup Archive 2001

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Re: Eigenvalue Problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg32000] Re: [mg31996] Eigenvalue Problem
  • From: Ken Levasseur <Kenneth_Levasseur at uml.edu>
  • Date: Mon, 17 Dec 2001 06:01:30 -0500 (EST)
  • References: <200112160844.DAA14246@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Steve:

I can show that they don't have to be real:


In[4]:=
Eigenvalues[{{1, 1}, {-1, 1}}]
Out[4]=
{1 - \[ImaginaryI], 1 + \[ImaginaryI]}

Ken Levasseur
Math. Sci.
UMass Lowell

Steven Spear wrote:

> Hi, could someone show me how to use Mathematica to sucessfully answer the
> following problem:
>
> Show that the Eigenvalues of A =
>
> [a][b]
> [c][d]
>
> must be real numbers. Thanks, Steve



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