[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Axiom-mail] Simplifying expressions involving radicals
From: |
Bill Page |
Subject: |
Re: [Axiom-mail] Simplifying expressions involving radicals |
Date: |
Wed, 21 May 2008 22:39:20 -0400 |
On Wed, May 21, 2008 at 10:25 PM, Alasdair McAndrew wrote:
> Here's my situation:
>
> a:=2^(1/3)+4^(1/3)
> p(x)==x^3-6*x-6
>
> I'd like p(a) to return zero; which it doesn't (although p(a::Float) returns
> 0.0). How can I do this?
>
(1) -> a:RECLOS(FRAC INT) := 2^(1/3)+4^(1/3)
3+-+ 3+-+
(1) \|4 + \|2
Type: RealClosure Fraction Integer
(2) -> p(x)==x^3-6*x-6
Type: Void
(3) -> p(a)
Compiling function p with type RealClosure Fraction Integer ->
RealClosure Fraction Integer
(3) 0
Type: RealClosure Fraction Integer
---------
Regards,
Bill Page.