Bugs item #3541292, was opened at 20120707 19:22
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Category: Lisp Core  Integration
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: https://www.google.com/accounts ()
Assigned to: Nobody/Anonymous (nobody)
Summary: error in residue calculation?
Initial Comment:
Maxima 5.27.0 http://maxima.sourceforge.net
using Lisp SBCL 1.0.24
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) residue(( x/((4*x  1)*(t^2  t + x)) ),t,(1sqrt(14*x))/2);
(%o1) 0
But apparently this should give a result in x?
sage: from sympy import Symbol, residue
sage: x = Symbol("x")
sage: t = Symbol("t")
sage: residue(x/((4*x  1)*(t^2  t + x)),t,(1sqrt(14*x))/2)
x/((4*x + 1)**(1/2)*(4*x  1))
This was first reported at http://ask.sagemath.org/question/1588/calculatingresiduewithmaxima_methods
I make no claim for the mathematical correctness  just reporting quickly  but since the function has t in the denominator, that it would be nonzero seems reasonable.

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