Re: Eigenvalues
- To: mathgroup@smc.vnet.net
- Subject: [mg11493] Re: Eigenvalues
- From: bt585@FreeNet.Carleton.CA (Michael Chang)
- Date: Fri, 13 Mar 1998 12:21:38 -0500
- Organization: The National Capital FreeNet
- References: <6e88nh$nok@smc.vnet.net>
Raya,
I suppose that this will depend on what version of Mathematica you're
running, and on your particular system setup.
For Mathematica 3.0.1 on a Pentium 220 PC with 64MB Ram,
Timing[Eigenvalues[testmatrix];]
returns a value of around 2 seconds!
I hope that this helps.
Mike
Raya Khanin (raya@maths.ed.ac.uk) writes:
> Hi,
>
> I have a problem of calculating eigenvalues for a simple 4X4 matrix. I
> am working on Sun workstation, and it takes minutes and minutes for
> Mathematica to perform Eigenvalues[] operation for a matrix like this
>
> Clear[a, b, c, d, e, d, f, g];
> testmatrix = {{a, b, c, d}, {b, c, d, e}, {c, d, e, f}, {d, e, f, g}};
> Eigenvalues[testmatrix];
>
> I will need to work with much larger (symbolic) matrices with not that
> simple entries. Has anyone had an experience of working with symbolic
> matrices?
>
> Any suggestions will be appreciated!
>
> thanks a lot.
>
> Raya Khanin
>
>
>