From: SourceForge.net <no...@so...> - 2007-03-01 09:24:30
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Bugs item #1671531, was opened at 2007-03-01 01:24 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=1671531&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: Tests Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: wrong limit Initial Comment: (%i3) limit(atan(x)+acot(x), x, minf); (%o3) -%pi/2 this is a constant function and the value for it is %pi/2 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1671531&group_id=4933 |
From: SourceForge.net <no...@so...> - 2007-03-01 18:14:19
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Bugs item #1671531, was opened at 2007-03-01 03:24 Message generated for change (Comment added) made by willisbl You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1671531&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: Tests Group: None >Status: Pending >Resolution: Invalid Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: wrong limit Initial Comment: (%i3) limit(atan(x)+acot(x), x, minf); (%o3) -%pi/2 this is a constant function and the value for it is %pi/2 ---------------------------------------------------------------------- >Comment By: Barton Willis (willisbl) Date: 2007-03-01 12:14 Message: Logged In: YES user_id=895922 Originator: NO See Equation 4.4.5, page 79 of Abramowitz and Stegun. You will notice that atan(x) + acot(x) = %pi/2 when the real part of x is positive; otherwise, atan(x) + acot(x) = -%pi/2. There might be other standards for the inverse cotangent function, but Maxima uses definitions from Abramowitz and Stegun. Note: Abramowitz and Stegun is available online. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1671531&group_id=4933 |
From: SourceForge.net <no...@so...> - 2007-03-16 02:20:09
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Bugs item #1671531, was opened at 2007-03-01 01:24 Message generated for change (Comment added) made by sf-robot You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1671531&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: Tests Group: None >Status: Closed Resolution: Invalid Priority: 5 Private: No Submitted By: Nobody/Anonymous (nobody) Assigned to: Nobody/Anonymous (nobody) Summary: wrong limit Initial Comment: (%i3) limit(atan(x)+acot(x), x, minf); (%o3) -%pi/2 this is a constant function and the value for it is %pi/2 ---------------------------------------------------------------------- >Comment By: SourceForge Robot (sf-robot) Date: 2007-03-15 19:20 Message: Logged In: YES user_id=1312539 Originator: NO 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: Barton Willis (willisbl) Date: 2007-03-01 10:14 Message: Logged In: YES user_id=895922 Originator: NO See Equation 4.4.5, page 79 of Abramowitz and Stegun. You will notice that atan(x) + acot(x) = %pi/2 when the real part of x is positive; otherwise, atan(x) + acot(x) = -%pi/2. There might be other standards for the inverse cotangent function, but Maxima uses definitions from Abramowitz and Stegun. Note: Abramowitz and Stegun is available online. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=1671531&group_id=4933 |
From: SourceForge.net <no...@so...> - 2012-03-28 15:44:22
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Bugs item #3512437, was opened at 2012-03-28 08:44 Message generated for change (Tracker Item Submitted) made by aleksasd You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3512437&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: Aleksas (aleksasd) Assigned to: Nobody/Anonymous (nobody) Summary: wrong limit Initial Comment: (%i1) f:((9*x)^(1/3)-3)/(sqrt(3+x)-sqrt(2*x)); (%o1) (9^(1/3)*x^(1/3)-3)/(sqrt(x+3)-sqrt(2)*sqrt(x)) wrong: (%i2) limit(f,x,3); (%o2) 0 correct: (%i3) algebraic:true; (%o3) true (%i4) radcan(f); (%o4) -((3^(2/3)*x^(1/3)-3)*sqrt(x+3)+sqrt(2)*3^(2/3)*x^(5/6)-3*sqrt(2)*sqrt(x))/(x-3) (%i5) limit(%,x,3); (%o5) -(sqrt(6)+sqrt(2)*sqrt(3))/3 (%i6) radcan(%); (%o6) -2^(3/2)/sqrt(3) Aleksas D ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3512437&group_id=4933 |
From: SourceForge.net <no...@so...> - 2012-06-16 13:28:52
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Bugs item #3512437, was opened at 2012-03-28 08:44 Message generated for change (Settings changed) made by dgildea You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3512437&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: Aleksas (aleksasd) Assigned to: Nobody/Anonymous (nobody) Summary: wrong limit Initial Comment: (%i1) f:((9*x)^(1/3)-3)/(sqrt(3+x)-sqrt(2*x)); (%o1) (9^(1/3)*x^(1/3)-3)/(sqrt(x+3)-sqrt(2)*sqrt(x)) wrong: (%i2) limit(f,x,3); (%o2) 0 correct: (%i3) algebraic:true; (%o3) true (%i4) radcan(f); (%o4) -((3^(2/3)*x^(1/3)-3)*sqrt(x+3)+sqrt(2)*3^(2/3)*x^(5/6)-3*sqrt(2)*sqrt(x))/(x-3) (%i5) limit(%,x,3); (%o5) -(sqrt(6)+sqrt(2)*sqrt(3))/3 (%i6) radcan(%); (%o6) -2^(3/2)/sqrt(3) Aleksas D ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=3512437&group_id=4933 |