On 2013-01-18, Georgi Guninski <[email protected]> wrote: > n=var('n') > a=log(-1/3125*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + > 1/2)^n)^9*sqrt(5))/log(-1/5*((-1/2*sqrt(5) + 1/2)^(8*n) - (1/2*sqrt(5) + > 1/2)^(8*n))*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + 1/2)^n) - > 1/5*((-1/2*sqrt(5) + 1/2)^(9*n) - (1/2*sqrt(5) + 1/2)^(9*n))*sqrt(5)) > limit(a,n=oo) > > many > ;;; Stack overflow. > ;;; Jumping to the outermost toplevel prompt > ;;; > Segmentation fault sage-ipython "$@" -i > > sagenb.org doesn't return anything for the limit > > sage 5.5 binary download on ubuntu 10.04 > this is a Maxima bug. Here is a run with their stable release:
Maxima 5.28.0 http://maxima.sourceforge.net using Lisp SBCL 1.0.55.0-abb03f9 Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) a=log(-1/3125*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + 1/2)^n)^9*sqrt(5))/log(-1/5*((-1/2*sqrt(5) + 1/2)^(8*n) - (1/2*sqrt(5) + 1/2)^(8*n))*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + 1/2)^n) - 1/5*((-1/2*sqrt(5) + 1/2)^(9*n) - (1/2*sqrt(5) + 1/2)^(9*n))*sqrt(5)); 1 sqrt(5) n sqrt(5) 1 n 9 ((- - -------) - (------- + -) ) 2 2 2 2 (%o1) a = log(- ----------------------------------) 9/2 5 1 sqrt(5) 9 n sqrt(5) 1 9 n (- - -------) - (------- + -) 2 2 2 2 /log(- ----------------------------------- sqrt(5) 1 sqrt(5) n sqrt(5) 1 n 1 sqrt(5) 8 n sqrt(5) 1 8 n ((- - -------) - (------- + -) ) ((- - -------) - (------- + -) ) 2 2 2 2 2 2 2 2 - -----------------------------------------------------------------------) 5 (%i2) limit(a,n,inf); (%o2) a (%i3) limit(log(-1/3125*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + 1/2)^n)^9*sqrt(5))/log(-1/5*((-1/2*sqrt(5) + 1/2)^(8*n) - (1/2*sqrt(5) + 1/2)^(8*n))*((-1/2*sqrt(5) + 1/2)^n - (1/2*sqrt(5) + 1/2)^n) - 1/5*((-1/2*sqrt(5) + 1/2)^(9*n) - (1/2*sqrt(5) + 1/2)^(9*n))*sqrt(5)),n,inf); INFO: Binding stack guard page unprotected Binding stack guard page temporarily disabled: proceed with caution Maxima encountered a Lisp error: Binding stack exhausted. PROCEED WITH CAUTION. Automatically continuing. To enable the Lisp debugger set *debugger-hook* to nil. INFO: Binding stack guard page reprotected (%i4) -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en.
