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[Maxima-bugs] [ maxima-Bugs-2944659 ] limit(erf(sqrt(log(t))/sqrt(2)), t, 0) -> Lisp error
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From: SourceForge.net <no...@so...> - 2010-02-09 23:59:23
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Bugs item #2944659, was opened at 2010-02-02 16:07 Message generated for change (Comment added) made by crategus You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2944659&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 - Limit Group: None >Status: Pending >Resolution: Works For Me Priority: 5 Private: No Submitted By: Dieter Kaiser (crategus) Assigned to: Nobody/Anonymous (nobody) Summary: limit(erf(sqrt(log(t))/sqrt(2)),t,0) -> Lisp error Initial Comment: This example gives a Lisp error: (%i7) limit(erf(sqrt(log(t))/sqrt(2)),t,0); Maxima encountered a Lisp error: The value NIL is not of type FIXNUM. Automatically continuing. To enable the Lisp debugger set *debugger-hook* to nil. The constant sqrt(2) in the numerator or denominator is necessary to get the error. Without the constant the limit gives a noun form. (%i8) limit(erf(sqrt(log(t))),t,0); (%o8) 'limit(erf(sqrt(log(t))),t,0) I think the source of the error is taylim (now the constant sqrt(2) is in the numerator): (%i9) tlimit(erf(sqrt(log(t))*sqrt(2)),t,0); Maxima encountered a Lisp error: The value NIL is not of type FIXNUM. Automatically continuing. To enable the Lisp debugger set *debugger-hook* to nil. Dieter Kaiser ---------------------------------------------------------------------- >Comment By: Dieter Kaiser (crategus) Date: 2010-02-10 00:59 Message: I think this error has gone. We get a noun form for the examples of this bug report: (%i4) limit(erf(sqrt(log(t))*sqrt(2)),t,0); (%o4) 'limit(erf(sqrt(2)*sqrt(log(t))),t,0) (%i5) limit(erf(sqrt(log(t))/sqrt(2)),t,0); (%o5) 'limit(erf(sqrt(log(t))/sqrt(2)),t,0) This might be due to the change of the code for simplifying 0^a which has been reverted in parts. Setting the status to pending and the resolution to "works for me". Dieter Kaiser ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2944659&group_id=4933 |