50g

--- In 50g@yahoogroups.com, "Simone" <gems_tux@...> wrote:
>
> Hello, I'm learning to use program BODE-ROUTH
> (http://www.hpcalc.org/details. php? id=3176), that it uses NEOPOLYS
> (http://www.hpcalc.org/details. php? id=3169). But when I try to
> insert the negative coefficients or negative roots of the polynomial
> at the numerator and at the denominator, and trying to trace the
> diagram, for example Bode, give back error to me: 
> 
> NEG Error: Bad Argument Type or 
> ABS Error: Bad Argument Type! 
> 
> I have tried also on the emu48 but the behavior is the same one. 
> 
> e.g.: 
> 
> 2:      {1 -2 1} 
> 1:   {1 -3 2 -1} 
> 
> 2:       {1 2 1} 
> 1: {{0 1 -2 -3}} 
> 
> With all the positive values they do not give error to me. Someone can
> help me? Best regards, Simone.
>

I have resolved the problem using the key [-] and not [+/-]

Simone