On Mar 10, 3:23 am, slabbe <sla...@gmail.com> wrote: > Hi, > > A friend of mine wants to factorize symbolicly x^2 - 2 : > > sage: p = x^2 - 2 > sage: p.factor() > x^2 - 2 > > Apparently p.roots() gives almost what he wants : > > sage: p.roots() > [(-sqrt(2), 1), (sqrt(2), 1)]
Or sage: p.roots(multiplicities=False) [-sqrt(2), sqrt(2)] > So, I just proposed him to do : > > sage: Factorization([(x-r,m) for r,m in p.roots()]) > (x - sqrt(2)) * (x + sqrt(2)) > > Do any of you have a better solution? How about: sage: S.<y> = PolynomialRing(QQ[sqrt(2)]) sage: p = y^2 - 2 sage: p.factor() (y - sqrt2) * (y + sqrt2) (I don't know why it says "sqrt2" instead of "sqrt(2)".) -- John -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
