[scilab-Users] Question about Scilab-poly

[Sylvestre Ledru]

Le mardi 16 décembre 2008 à 12:46 +0200, Sotos a écrit :
> Hallo,
> 
> I have been using Scilab for about 3  months,as  a new  student.
> My question...
> What kind of number is that at the bottom...(4.406D-16).
Note that Scilab 5 is results closer that what you expect:

-->a=[1 1 3
-->1 2 3
-->0 1 1 ]
 a  =
 
    1.    1.    3.  
    1.    2.    3.  
    0.    1.    1.  
 
-->p= poly(a,"z")
 p  =
 
              2   3  
  - 1 + z - 4z + z   

Sylvestre