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[Axiom-developer] [Axiom-mail] [Axiom-mail] A newby question about eval

From: William Sit
Subject: [Axiom-developer] [Axiom-mail] [Axiom-mail] A newby question about eval andExpression
Date: Sun, 13 Nov 2005 21:45:31 -0600


Doug Stewart wrote:

> But it is a constant ---- How can I tell axiom that it is a constant?
> I tried this way but :-(
> )clear all
> digits 20
> -- n:=x^3+a1*x^2+a2*x+a3 ::Polynomial Fraction Integer
> a1:=1
> a2:=1
> a3:=1
> Q:=(3*'a2-'a1^2)/9
> R:=(9*'a1*'a2-27*'a3-2*'a1^3)/54
> S:  Complex Float :=(R+(Q^3+R^2)^(1/2))^(1/3)
> I thought that if I gave a1 a2 a3 some in integer values, that Maxima
> would then know that it was a constant but no it thinks it is a variable????

Perhaps you try removing the single quotes?


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