From: SourceForge.net <no...@so...> - 2007-03-29 05:41:29
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Bugs item #1690374, was opened at 2007-03-29 00:41 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=1690374&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 - Trigonometry Group: None Status: Open Resolution: None Priority: 4 Private: No Submitted By: Barton Willis (willisbl) Assigned to: Nobody/Anonymous (nobody) Summary: asin(1 / sqrt(2)) Initial Comment: Maxima doesn't know that asin(1/sqrt(2)) = %pi/4. (%i9) asin(1/sqrt(2)), %piargs : 'true; (%o9) asin(1/sqrt(2)) Here is a workaround (is there something better?) (%i10) %,logarc, rectform; (%o10) %pi/4 Maxima does know asin(1/2) = %pi / 6: (%i11) asin(1/2), %piargs : 'true; (%o11) %pi/6 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1690374&group_id=4933 |
From: SourceForge.net <no...@so...> - 2007-04-02 16:34:17
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Bugs item #1690374, was opened at 2007-03-29 01:41 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1690374&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 - Trigonometry Group: None Status: Open Resolution: None Priority: 4 Private: No Submitted By: Barton Willis (willisbl) Assigned to: Nobody/Anonymous (nobody) Summary: asin(1 / sqrt(2)) Initial Comment: Maxima doesn't know that asin(1/sqrt(2)) = %pi/4. (%i9) asin(1/sqrt(2)), %piargs : 'true; (%o9) asin(1/sqrt(2)) Here is a workaround (is there something better?) (%i10) %,logarc, rectform; (%o10) %pi/4 Maxima does know asin(1/2) = %pi / 6: (%i11) asin(1/2), %piargs : 'true; (%o11) %pi/6 ---------------------------------------------------------------------- >Comment By: Raymond Toy (rtoy) Date: 2007-04-02 12:34 Message: Logged In: YES user_id=28849 Originator: NO After looking at the code in simp-%asin, it seems like an oversight that it doesn't handle 1/sqrt(2). I'll try to patch that up soon. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1690374&group_id=4933 |
From: SourceForge.net <no...@so...> - 2007-07-19 16:37:01
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Bugs item #1690374, was opened at 2007-03-29 01:41 Message generated for change (Comment added) made by rtoy You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1690374&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 - Trigonometry Group: None >Status: Closed >Resolution: Fixed Priority: 4 Private: No Submitted By: Barton Willis (willisbl) Assigned to: Nobody/Anonymous (nobody) Summary: asin(1 / sqrt(2)) Initial Comment: Maxima doesn't know that asin(1/sqrt(2)) = %pi/4. (%i9) asin(1/sqrt(2)), %piargs : 'true; (%o9) asin(1/sqrt(2)) Here is a workaround (is there something better?) (%i10) %,logarc, rectform; (%o10) %pi/4 Maxima does know asin(1/2) = %pi / 6: (%i11) asin(1/2), %piargs : 'true; (%o11) %pi/6 ---------------------------------------------------------------------- >Comment By: Raymond Toy (rtoy) Date: 2007-07-19 12:37 Message: Logged In: YES user_id=28849 Originator: NO Fixed in CVS: trigo.lisp, rev 1.13. ---------------------------------------------------------------------- Comment By: Raymond Toy (rtoy) Date: 2007-04-02 12:34 Message: Logged In: YES user_id=28849 Originator: NO After looking at the code in simp-%asin, it seems like an oversight that it doesn't handle 1/sqrt(2). I'll try to patch that up soon. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1690374&group_id=4933 |