On Thu, May 14, 2009 at 1:19 PM, Bill Page <bill.p...@newsynthesis.org> wrote: > > On Wed, May 13, 2009 at 10:46 PM, Mike Hansen wrote: >> >> On Wed, May 13, 2009 at 6:58 PM, Bill Page wrote: >>> >>> Can someone explain this apparently inconsistent result? >> >> It's just operator precedence: >> >> sage: -(2.0^(1/3)) >> -1.25992104989487 >> sage: (-2.0)^(1/3) >> 0.629960524947437 + 1.09112363597172*I >> > > Clear. Thanks. Why this particular root? >
I believe that it is the real 3rd root of 2 times the "natural" primitive 6th root of 1, i.e. exp(2*pi*i/6). -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~---------~--~----~------------~-------~--~----~ 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 URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
