[scilab-Users] Polynomial roots

[Inderpreet Arora]

Thanks. Now, I could figure out that it is stored with an (eventually zero) imaginary part (Help: Description of isreal function).

-->isreal(r)
 ans  =

  F  

-->isreal(a)
 ans  =

  T 

Sincerely,
Inderpreet


--- On Sat, 1/10/09, François Vogel <fvogelnew1 at free.fr> wrote:
From: François Vogel <fvogelnew1 at free.fr>
Subject: Re: [scilab-Users] Polynomial roots
To: users at lists.scilab.org
Date: Saturday, January 10, 2009, 6:05 PM

-->real(r) > 2
 ans  =

  F
  T

Francois


Inderpreet Arora said on 10/01/2009 18:33:
> Hello,
> I want to compare roots of a polynomial with a number. But it gives error..
Consider a simple e.g.,
> 
> a = [2 3];
> s = %s;
> x = s^2 - 5*s + 6;
> r = roots(x); r1 = [roots(x)]';
> t1 = type(a);
> t2 = type(r);
> a > 2
> r > 2
> 
> It does the comparison for a (done for verification) but gives the
following error for r and r1, though their types are same,
> 
> Undefined operation for the given operands
> check or define function %s_2_s for overloading
> 
> I tried in versions 4.1 and 4.1.2. Please guide. Thanks.
> 
> Sincerely,
> Inderpreet



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20090110/468ccc2a/attachment.htm>