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[Maxima-bugs] [ maxima-Bugs-956730 ] integrate(x^n,x,0,inf) => sinrx error
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From: SourceForge.net <no...@so...> - 2006-03-13 15:36:08
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Bugs item #956730, was opened at 2004-05-19 10:04 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=956730&group_id=4933 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Lisp Core Group: None >Status: Closed Resolution: Fixed Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: integrate(x^n,x,0,inf) => sinrx error Initial Comment: integrate(x^n,x,0,inf); Is n positive, negative, or zero? neg; Is n + 1 positive, negative, or zero? neg; Is n an integer? y; Error: |$x| is not of type LIST. Error signalled by SINRX. The integral is of course divergent, but it should not be getting an internal error. Why does it even ask whether n is integral? Strangely, with n non-integer, it correctly diverges. ---------------------------------------------------------------------- >Comment By: Raymond Toy (rtoy) Date: 2006-03-13 10:36 Message: Logged In: YES user_id=28849 Hmm. Let's actually close this bug. ---------------------------------------------------------------------- Comment By: Robert Dodier (robert_dodier) Date: 2005-08-21 23:16 Message: Logged In: YES user_id=501686 Looks to me like it's been fixed (verified result on 5.9.1cvs / GCL 2.6.6 and clisp 2.33, both on Linux). Closing this report. ---------------------------------------------------------------------- Comment By: Barton Willis (willisbl) Date: 2004-10-05 14:58 Message: Logged In: YES user_id=895922 It seems that this bug has been fixed. (%i2) integrate(x^n,x,0,inf); Is n positive, negative, or zero? neg;Is n + 1 positive, negative, or zero? neg;Is n an integer? yes;Integral is divergent -- an error. Quitting. To debug this try DEBUGMODE(TRUE); (%i3) build_info(); Maxima version: 5.9.1.1cvs Maxima build date: 9:34 10/4/2004 host type: i686-pc-mingw32 lisp-implementation-type: Kyoto Common Lisp lisp-implementation-version: GCL 2.6.5 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=956730&group_id=4933 |