From: SourceForge.net <noreply@so...>  20091129 02:20:12

Bugs item #2609426, was opened at 20090217 15:32 Message generated for change (Comment added) made by sfrobot You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2609426&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: Closed Resolution: Works For Me Priority: 5 Private: No Submitted By: iga Lenari (zigalenarcic) Assigned to: Nobody/Anonymous (nobody) Summary: integrate( cos(a)/ sqrt((tan(a))^2 + 1), a, %pi/2, %pi/2 ); Initial Comment: Maxima can't caluculate definite integral integrate( cos(a)/ sqrt((tan(a))^2 + 1), a, %pi/2, %pi/2 ); It gives me The number 1 isn't in the domain of atanh  an error. To debug this try debugmode(true); If I calculate indefinite integral integrate( cos(a)/ sqrt((tan(a))^2 + 1), a); and manually put in integration limits, it gives the correct result %pi/2.  >Comment By: SourceForge Robot (sfrobot) Date: 20091129 02:20 Message: This Tracker item was closed automatically by the system. It was previously set to a Pending status, and the original submitter did not respond within 14 days (the time period specified by the administrator of this Tracker).  Comment By: Dieter Kaiser (crategus) Date: 20091114 20:44 Message: Documentation for intanalysis has been added to Integration.texi revision 1.45. The integral of this bug report has been added as an example. Maxima does not give a wrong result and is able to solve the integral with the help of the option variable intanalysis. More might be possible, but this would be a feature request. Setting the status to pending and the resolution to "Works for me". Dieter Kaiser  Comment By: Raymond Toy (rtoy) Date: 20090217 17:39 Message: FWIW, maxima is trying to find the roots of the denominator to see if there are any poles on the interval of integration. SOLVE is getting confused. A workaround would be to set intanalysis (undocumented) to false. Then integrate returns %pi/2.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2609426&group_id=4933 