Subject: Solving 3rd order equation by solve (more on...)
From: Jaime Villate
Date: Wed, 06 Mar 2013 15:54:13 +0000
On 03/06/2013 10:55 AM, Pepe Sanchez wrote:
> *******************Two procedures that fail in getting the answer:
>
> 1) by using
>
> rectform(eivects(HV)), numer;
>
> I get:
>
> "algsys failure: the eigenvector(s) for the"1"th eigenvalue will be
> missing."
> "algsys failure: the eigenvector(s) for the"2"th eigenvalue will be
> missing."
> "algsys failure: the eigenvector(s) for the"3"th eigenvalue will be
> missing."
> (%o13)
> [[[2.445,5.551*10^-17*%i+0.753,3.802-5.551*10^-17*%i],[1,1,1]],[[],[],[]]]
Of course, eivects wants to work algebraically but you forced it to work
numerically.
>
> 2) Trying to get the normalizad vectors: by using
>
> ueivects(HV);
>
> I get:
>
> << Expression too long to display! >>
>
that's not a Maxima error. Perhaps a feature of the interface you are
using to access Maxima that does not like big expressions?
Regards,
Jaime