this does work (replacing 1/4 by 0.25): sage: taylor(0.25*x-x^2,x,0.2,3) -1.0*(x - 0.2)^2 - 0.1500000000000001*x + 0.04000000000000002
Both ways work in Sage's Maxima: $ sage --maxima ;;; Loading #P"/home/dima/Sage/sage-dev/local/lib/ecl/sb-bsd-sockets.fas" ;;; Loading #P"/home/dima/Sage/sage-dev/local/lib/ecl/sockets.fas" ;;; Loading #P"/home/dima/Sage/sage-dev/local/lib/ecl/defsystem.fas" ;;; Loading #P"/home/dima/Sage/sage-dev/local/lib/ecl/cmp.fas" Maxima 5.39.0 http://maxima.sourceforge.net using Lisp ECL 16.1.2 %i1) taylor(0.25*x-x^2,x,0.2,3); rat: replaced 0.2 by 1/5 = 0.2 rat: replaced 0.25 by 1/4 = 0.25 rat: replaced 0.2 by 1/5 = 0.2 1 3 (x - 0.2) 2 (%o1)/T/ --- - ----------- - (x - 0.2) + . . . 100 20 (%i2) taylor(1/4*x-x^2,x,0.2,3); rat: replaced 0.2 by 1/5 = 0.2 rat: replaced 0.2 by 1/5 = 0.2 1 3 (x - 0.2) 2 (%o2)/T/ --- - ----------- - (x - 0.2) + . . . 100 20 Any idea what's going on? Looks like a Sage bug, or perhaps Sage loads Maxima with an option that prevents calling that 'rat' thing... On Tuesday, July 11, 2017 at 8:07:59 PM UTC+1, kcrisman wrote: > > > I had following problem: >> >> this gives >> sage: taylor(1/4*x-x^2,x,0.2,3) >> ... >> typeError: ECL says: In function GCD, the value of the first argument is >> -0.6000000000000003 >> which is not of the expected type INTEGER >> >> but >> sage: taylor(1/4*x-x^2,x,0.2,3) works ;-)) >> >> > Wait, what is the difference between your commands? I feel like there > might be a typo/cute-paste error somewhere in there. Certainly the error > you mention is the sort of thing we've seen in the past when Maxima doesn't > like decimals in certain commands. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
