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From: SourceForge.net <noreply@so...>  20091222 22:51:12

Bugs item #2914296, was opened at 20091214 19:30 Message generated for change (Comment added) made by alex108 You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2914296&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: Open Resolution: None Priority: 5 Private: No Submitted By: Jaime E. Villate (villate) Assigned to: Nobody/Anonymous (nobody) Summary: Limit gets Maxima stuck Initial Comment: The following limit makes Maxima 5.20 enter an endless loop: limit( (log(1+x^2)2+2*cos(x))/((sin(x))^2+2*sqrt(1x^2)2),x,0); In version 5.19.0 the loop ended with a wrong result "minf". The correct result is 5/7.  Comment By: Aleksas Domarkas (alex108) Date: 20091223 00:51 Message: (log(1+x^2)2+2*cos(x))/((sin(x))^2+2*sqrt(1x^2)2)$ taylor(%,x,0,5)$ limit(%,x,0); 5/7  Comment By: Dieter Kaiser (crategus) Date: 20091214 22:13 Message: For the record: lhospital generates the following expression when trying to find the limit of the example of this bug report: (%o28) 3*x^2/(x^4*(87*sin(x)^287*cos(x)^2+48*sqrt(1x^2)) +x^8*(4*sin(x)^24*cos(x)^2)3*sin(x)^2 +x^2*(28*sin(x)^2+28*cos(x)^244*sqrt(1x^2)) +x^6*(60*cos(x)^260*sin(x)^2)56*x^7*cos(x)*sin(x) +152*x^5*cos(x)*sin(x)110*x^3*cos(x)*sin(x)+14*x*cos(x)*sin(x) +3*cos(x)^2+4*sqrt(1x^2)) Then the routine limit is called again, but it returns never. We can do it directly with the above expression: (%i29) limit(expr,x,0); ^CMaxima encountered a Lisp error: EXT:GC: User break Automatically continuing. To enable the Lisp debugger set *debuggerhook* to nil. I have no idea what is the problem. Dieter Kaiser  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2914296&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 21:56:47

Bugs item #2919296, was opened at 20091222 13:51 Message generated for change (Comment added) made by alex108 You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&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: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: binomial sums Initial Comment: wanted to use this in my teaching but... load(simplify_sum); sum(binomial(n,x)*p^x*(1p)^(nx),x,0,n); simplify_sum(%) 0 sum(binomial(n,x)*0.3^x*(10.3)^(nx),x,0,n); simplify_sum(%); rat: replaced 0.3 by 3/10 = 0.3 rat: replaced 0.7 by 7/10 = 0.7 rat: replaced 0.7 by 7/10 = 0.7 1  Comment By: Aleksas Domarkas (alex108) Date: 20091222 23:56 Message: Do it like this: load(simplify_sum); sum(binomial(n,x)*p^x*q^(nx),x,0,n); simplify_sum(%) (p+q)^n  Comment By: Andrej Vodopivec (andrejv) Date: 20091222 16:57 Message: This is a bug in the implementation of the Gosper algorithm from the Zeilberger package. A workaround for simplify_sum is to set Gosper_in_Zeilberger to false.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 20:41:11

Bugs item #2892710, was opened at 20091105 16:26 Message generated for change (Settings changed) made by l_butler You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2892710&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 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Allow easier library access Initial Comment: Currently, to use Maxima as a Lisp ibrary requires (setpathnames) in the file src/initcl.lisp to load packages, but this has an unbound variable *maximalangsubdir* which is only set in another method which is only run when Maxima is actually run. This ticket would add an error catch in setpathnames to check the case where *maximalangsubdir* is neither NIL nor an actual path, by invoking (setq *maximalangsubdir* nil) wherever appropriate.  Comment By: Leo Butler (l_butler) Date: 20091222 17:47 Message: I have initialized the variable in question in src/initcl.lisp: (defvar *maximalangsubdir* nil) I believe this fixes the problem and I am closing the report.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2892710&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 17:47:23

Bugs item #2892710, was opened at 20091105 16:26 Message generated for change (Comment added) made by l_butler You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2892710&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 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: Allow easier library access Initial Comment: Currently, to use Maxima as a Lisp ibrary requires (setpathnames) in the file src/initcl.lisp to load packages, but this has an unbound variable *maximalangsubdir* which is only set in another method which is only run when Maxima is actually run. This ticket would add an error catch in setpathnames to check the case where *maximalangsubdir* is neither NIL nor an actual path, by invoking (setq *maximalangsubdir* nil) wherever appropriate.  Comment By: Leo Butler (l_butler) Date: 20091222 17:47 Message: I have initialized the variable in question in src/initcl.lisp: (defvar *maximalangsubdir* nil) I believe this fixes the problem and I am closing the report.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2892710&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 15:24:55

Bugs item #2919396, was opened at 20091222 15:24 Message generated for change (Tracker Item Submitted) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919396&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: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: improper integral of x*cos(y*x) no longer works Initial Comment: I am finding the following possible regression from 5.19.1 to 5.20.0 (also in 5.20.1): 5.19.1 (%i1) integrate(x*cos(y*x),x,minf,inf); (%o1) 0 5.20.0 (%i1) integrate(x*cos(y*x),x,minf,inf); (%o1) <ascii art indicating the integral is returned as a nounform> This is with SBCL and ECL.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919396&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 14:57:50

Bugs item #2919296, was opened at 20091222 12:51 Message generated for change (Comment added) made by andrejv You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&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: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: binomial sums Initial Comment: wanted to use this in my teaching but... load(simplify_sum); sum(binomial(n,x)*p^x*(1p)^(nx),x,0,n); simplify_sum(%) 0 sum(binomial(n,x)*0.3^x*(10.3)^(nx),x,0,n); simplify_sum(%); rat: replaced 0.3 by 3/10 = 0.3 rat: replaced 0.7 by 7/10 = 0.7 rat: replaced 0.7 by 7/10 = 0.7 1  >Comment By: Andrej Vodopivec (andrejv) Date: 20091222 15:57 Message: This is a bug in the implementation of the Gosper algorithm from the Zeilberger package. A workaround for simplify_sum is to set Gosper_in_Zeilberger to false.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&group_id=4933 
From: SourceForge.net <noreply@so...>  20091222 11:51:36

Bugs item #2919296, was opened at 20091222 11:51 Message generated for change (Tracker Item Submitted) made by nobody You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&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: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: binomial sums Initial Comment: wanted to use this in my teaching but... load(simplify_sum); sum(binomial(n,x)*p^x*(1p)^(nx),x,0,n); simplify_sum(%) 0 sum(binomial(n,x)*0.3^x*(10.3)^(nx),x,0,n); simplify_sum(%); rat: replaced 0.3 by 3/10 = 0.3 rat: replaced 0.7 by 7/10 = 0.7 rat: replaced 0.7 by 7/10 = 0.7 1  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2919296&group_id=4933 