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From: SourceForge.net <noreply@so...>  20120322 18:11:48

Bugs item #3510168, was opened at 20120322 11:11 Message generated for change (Tracker Item Submitted) made by slitvinov You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510168&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: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Sergey Litvinov (slitvinov) Assigned to: Nobody/Anonymous (nobody) Summary: integration, interactive prompt Initial Comment: Integration ignores my answer in interactive prompt and cannot compute integral. (%i3) display2d: false; (%i4) integrate(%e^(A*x + x), x, 0, +inf); Is A1 positive, negative, or zero? positive; (%o4) 'integrate(%e^(xx*A),x,0,inf) It works in this way: assume(A>1); integrate(%e^(A*x + x), x, 0, +inf); version: version 5.26.0_90_gdabb9d9, lisp clisp  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510168&group_id=4933 
From: SourceForge.net <noreply@so...>  20120322 18:04:54

Bugs item #3510167, was opened at 20120322 11:04 Message generated for change (Tracker Item Submitted) made by robertmarik You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510167&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  Integration Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Robert Marik (robertmarik) Assigned to: Nobody/Anonymous (nobody) Summary: bug in changevar Initial Comment: The following (%o2) is a bug in changevar. In constrast, (%o3) is O.K. The problem is that the answer contains both original and new variables. Has been reported also in the maxima mailing list: http://thread.gmane.org/gmane.comp.mathematics.maxima.general/37587 The problem is also in Maxima 5.26. Maxima 5.24.0 http://maxima.sourceforge.net using Lisp GNU Common Lisp (GCL) GCL 2.6.7 (a.k.a. GCL) 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) display2d:false; (%o1) false (%i2) changevar('integrate(((cos(x)+sin(x)))^(6)*(sin(x)+cos(x)),x),t=cos(x)+sin(x),t,x); (%o2) 'integrate(sin(x)^6+(6*cos(x)12*t)*sin(x)^5 +(15*cos(x)^260*t*cos(x)+60*t^2)*sin(x)^4 +(20*cos(x)^3120*t*cos(x)^2+240*t^2*cos(x)160*t^3) *sin(x)^3 +(15*cos(x)^4120*t*cos(x)^3+360*t^2*cos(x)^2 480*t^3*cos(x)+240*t^4) *sin(x)^2 +(6*cos(x)^560*t*cos(x)^4+240*t^2*cos(x)^3 480*t^3*cos(x)^2+480*t^4*cos(x)192*t^5) *sin(x)+cos(x)^612*t*cos(x)^5+60*t^2*cos(x)^4 160*t^3*cos(x)^3+240*t^4*cos(x)^2192*t^5*cos(x) +64*t^6,t) (%i3) changevar('integrate(((cos(x)+sin(x)))^(1/6)*(sin(x)+cos(x)),x),t=cos(x)+sin(x),t,x); (%o3) 'integrate((cos(x)sin(x))*(sin(x)+cos(x))^(1/6),x) (%i4) bug_report(); The Maxima bug database is available at http://sourceforge.net/tracker/?atid=104933&group_id=4933&func=browse Submit bug reports by following the 'Add new' link on that page. Please include the following information with your bug report:  Maxima version: 5.24.0 Maxima build date: 10:27 5/17/2011 Host type: i686pclinuxgnu Lisp implementation type: GNU Common Lisp (GCL) Lisp implementation version: GCL 2.6.7  The above information is also reported by the function 'build_info'. (%o4) "" (%i5)  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510167&group_id=4933 
From: SourceForge.net <noreply@so...>  20120322 17:24:46

Bugs item #3510152, was opened at 20120322 09:49 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510152&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: Pending >Resolution: Invalid Priority: 5 Private: No Submitted By: Rigoberto Gómez Cruz (rgomezor) Assigned to: Nobody/Anonymous (nobody) Summary: Cannot solve siultaneous equations Initial Comment: In trying to solve this system, /* [wxMaxima: input start ] */ debugmode(true); debuggerhook(nil); coef: matrix ([1, log(2e3), log(1.5e3), log(1e0)], [1, log(4e3), log(1.5e3), log(1e0)], [1, log(4e3), log(3e3), log(2e0)], [1, log(4e3), log(3e3), log(1e0)]); v: matrix ([log(1.8e4)], [log(3.6e4)], [log(1.8e4)], [log(7.2e4)]); v / coef; /* [wxMaxima: input end ] */ One gets this message Maxima encountered a Lisp error: Error in FMAPL1 [or a callee]: Caught fatal error [memory may be damaged] Automatically continuing. To enable the Lisp debugger set *debuggerhook* to nil.  >Comment By: Raymond Toy (rtoy) Date: 20120322 10:24 Message: Not sure why you think v / coef will solve a linear system for you. It doesn't. It's trying to take the reciprocal of each element of coef, which contains a 0. You might want to try linsolve_by_lu(coef, v, 'floatfield). Marking as pending/invalid.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510152&group_id=4933 
From: SourceForge.net <noreply@so...>  20120322 16:49:58

Bugs item #3510152, was opened at 20120322 09:49 Message generated for change (Tracker Item Submitted) made by rgomezor You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510152&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: Rigoberto Gómez Cruz (rgomezor) Assigned to: Nobody/Anonymous (nobody) Summary: Cannot solve siultaneous equations Initial Comment: In trying to solve this system, /* [wxMaxima: input start ] */ debugmode(true); debuggerhook(nil); coef: matrix ([1, log(2e3), log(1.5e3), log(1e0)], [1, log(4e3), log(1.5e3), log(1e0)], [1, log(4e3), log(3e3), log(2e0)], [1, log(4e3), log(3e3), log(1e0)]); v: matrix ([log(1.8e4)], [log(3.6e4)], [log(1.8e4)], [log(7.2e4)]); v / coef; /* [wxMaxima: input end ] */ One gets this message Maxima encountered a Lisp error: Error in FMAPL1 [or a callee]: Caught fatal error [memory may be damaged] Automatically continuing. To enable the Lisp debugger set *debuggerhook* to nil.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3510152&group_id=4933 
From: SourceForge.net <noreply@so...>  20120322 07:30:16

Bugs item #3509821, was opened at 20120321 09:53 Message generated for change (Comment added) made by riotorto You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3509821&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: None Group: None Status: Open Resolution: None Priority: 5 Private: Yes Submitted By: kaefer (penzkofk) Assigned to: Nobody/Anonymous (nobody) Summary: problems with drawing points Initial Comment: draw3d(points(A, ...) ) creates several erros: see example  >Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20120322 00:30 Message: I've just seen the attached file. You have to write the points between square brackets. Something like draw3d(points([O,A])); or draw3d(points([O])); should work.  Mario  Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20120322 00:25 Message: Please, Can you send a simple piece of code to reproduce the problem? Thanks  Mario  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3509821&group_id=4933 
From: SourceForge.net <noreply@so...>  20120322 07:25:58

Bugs item #3509821, was opened at 20120321 09:53 Message generated for change (Comment added) made by riotorto You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3509821&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: None Group: None Status: Open Resolution: None Priority: 5 Private: Yes Submitted By: kaefer (penzkofk) Assigned to: Nobody/Anonymous (nobody) Summary: problems with drawing points Initial Comment: draw3d(points(A, ...) ) creates several erros: see example  >Comment By: Mario Rodriguez Riotorto (riotorto) Date: 20120322 00:25 Message: Please, Can you send a simple piece of code to reproduce the problem? Thanks  Mario  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3509821&group_id=4933 