poly_discriminant(poly,var) function



Reinforcing Andre's observation, I have used this function for years in
Maxima.  Checking back, I found a .mac file dated 3/27/2007 in which the
function worked.  It's extremely useful and deserves to continue to exist in
Maxima.

-----Original Message-----
From: maxima-bounces at math.utexas.edu [mailto:maxima-bounces at math.utexas.edu]
On Behalf Of andre maute
Sent: Friday, April 17, 2009 2:16 PM
To: maxima at math.utexas.edu
Subject: Re: [Maxima] solving a cubic eq

On Friday 17 April 2009, Stavros Macrakis wrote:
> I am not aware of a function called poly_discriminant in Maxima or for
> that matter a function by some other name that calculates polynomial
> discriminants?  That said, the formulae are straightforward and you
> can easily write it yourself, something like

I can clearly see this function at the beginning of the file

/opt/maxima/share/maxima/5.15.0/src/result.lisp

simply use grep ;-)

Andre