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From: SourceForge.net <noreply@so...>  20070705 05:57:33

Bugs item #1748173, was opened at 20070704 22:57 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1748173&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  Solving equations Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Problems with functions with uppercase arguments in solve Initial Comment: solve([FAe(A,B,C,D,Dy,Dz)=0,FBe(A,B,C,D,Dy,Dz)=0,...]); returns an 'unexpected error', while solve([FAe(a,b,c,d,dy,dz)=0,FBe(a,b,c,d,dy,dz)=0,...]); returns the right results For the definition of the functions see the attached file. The functions are defined both with uppercase arguments and lowercase arguments. Then the uppercase and lowercase functions are substracted to see, that they are equal. Then four systems of equations are solved: 1: Uppercase defined functions with uppercase arguments: fail 2: Lowercase defined functions with uppercase arguments: fail 3: Uppercase defined functions with lowercase arguments: succeed 4: Lowercase defined functions with lowercase arguments: succeed System information: Maxima version: 5.12.0 Maxima build date: 19:33 5/3/2007 host type: i686pcmingw32 lispimplementationtype: GNU Common Lisp (GCL) lispimplementationversion: GCL 2.6.8  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1748173&group_id=4933 
From: SourceForge.net <noreply@so...>  20080225 15:52:13

Bugs item #1748173, was opened at 20070704 22:57 Message generated for change (Comment added) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1748173&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  Solving equations Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Problems with functions with uppercase arguments in solve Initial Comment: solve([FAe(A,B,C,D,Dy,Dz)=0,FBe(A,B,C,D,Dy,Dz)=0,...]); returns an 'unexpected error', while solve([FAe(a,b,c,d,dy,dz)=0,FBe(a,b,c,d,dy,dz)=0,...]); returns the right results For the definition of the functions see the attached file. The functions are defined both with uppercase arguments and lowercase arguments. Then the uppercase and lowercase functions are substracted to see, that they are equal. Then four systems of equations are solved: 1: Uppercase defined functions with uppercase arguments: fail 2: Lowercase defined functions with uppercase arguments: fail 3: Uppercase defined functions with lowercase arguments: succeed 4: Lowercase defined functions with lowercase arguments: succeed System information: Maxima version: 5.12.0 Maxima build date: 19:33 5/3/2007 host type: i686pcmingw32 lispimplementationtype: GNU Common Lisp (GCL) lispimplementationversion: GCL 2.6.8  Comment By: Nobody/Anonymous (nobody) Date: 20080225 07:52 Message: Logged In: NO After trying various names (AAA, aaa, FOO1, X1, etc) I believe at this point that the problem is due to ordering of the variables. If Dy and Dz are replaced with something that comes after A, B, C, and D, for example, E and F, then solve is OK. Maybe solve (or allroots which is called by solve) is eliminating variables in order and there is a problem eliminating Dy and/or Dz before the others. If that's the case, it's not clear to me how to make progress here. Trying all possible elimination orderings is out of the question; or is it? Robert Dodier  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1748173&group_id=4933 
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