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[Maxima-bugs] [ maxima-Bugs-535363 ] Hospital gives up without warning
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From: SourceForge.net <no...@so...> - 2006-03-26 23:21:12
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Bugs item #535363, was opened at 2002-03-26 12:21 Message generated for change (Comment added) made by robert_dodier You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=535363&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: Open Resolution: None Priority: 5 Submitted By: Daniel Lemire (lemire) Assigned to: Nobody/Anonymous (nobody) Summary: Hospital gives up without warning Initial Comment: Behavior: (C1) limit(exp(-1/x)/x^5,x,0,PLUS); (D1) 0 (C2) limit(exp(-1/x)/x^6,x,0,PLUS); - 1/x %E (D2) limit ------- x -> 0+ 6 x Explanation (Richard Fateman): lhospitallim is set to 5. Yes it is arbitrary, but you can change it. Expected behavior: Wouldn't it be nicer if there was some warning message telling us "I stopped, but by changing this variable you could maybe get me to evaluate the limit in full"...? This gives the wrong impression... like "oh! Maxima can't solve that!". Further comments (Richard Fateman): I suppose this could be done, but it might also be the case that after giving up on L'Hopital's rule it tries something else that might succeed. The source code for limit is available. Further comments (James Amundson): I agree. It also might be a good idea to increase the default value. Computers are bigger and stronger now. ---------------------------------------------------------------------- >Comment By: Robert Dodier (robert_dodier) Date: 2006-03-26 16:21 Message: Logged In: YES user_id=501686 For the record, same behavior in Maxima 5.9.3. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=535363&group_id=4933 |