axiom-math
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [fricas-devel] Re: [Axiom-math] Selection of roots


From: Alejandro Jakubi
Subject: Re: [fricas-devel] Re: [Axiom-math] Selection of roots
Date: Mon, 3 Nov 2008 20:21:27 -0300

On Mon, 3 Nov 2008, Martin Rubey wrote:

Alejandro Jakubi <address@hidden> writes:
Now, my next question is about selecting the two real roots out of the four
produced by 'radicalSolve' here:

f:=(x^3+x^2-4*x-4)/(2*x^2+7*x-4)
fp:=differentiate(f,x)
radicalSolve(fp,x)

The problem is that

allRootsOf(fp)$RealClosure(Fraction Integer)

try

allRootsOf(numer fp)$RealClosure(Fraction Integer)


Fine. Now, how I recover the algebraic expressions, as produced by
'radicalSolve', associated with such labels like %A1, %A2 ?


Alejandro Jakubi





reply via email to

[Prev in Thread] Current Thread [Next in Thread]