Hello all
Maxima does not solve exact ODE x+ln(y)+(x/y+sin(x))*y'=0
Looked into definition of ode2 (file ode2.mac) and tried commands
integfactor and exact which seem to be used for solving such equations - no
problems found.
How can I find reason, why Maxima refuses to solve it directly?
Many thanks
Robert Marik
Maxima 5.18.1 http://maxima.sourceforge.net
Using Lisp CMU Common Lisp CVS 19d 19d-release (19D)
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) display2d:false;
(%o1) false
(%i2) ode2(x+ln(y)+(x/y+sin(x))*'diff(y,x), y, x);
(%o2) false
(%i3) integfactor(x+log(y),x/y+sin(y));
(%o3) 1
(%i4) exact(x+log(y),x/y+sin(y));
(%o4) (2*x*log(y)-2*cos(y)+x^2)/2 = %c
(%i5) bug_report();
The Maxima bug database is available at
http://sourceforge.net/tracker/?atid=104933&group_id=4933&func=browse
Submit bug reports by following the 'Add new artifact' link on that page.
Please include the following build information with your bug report:
-------------------------------------------------------------
Maxima version: 5.18.1
Maxima build date: 13:5 5/3/2009
host type: i686-pc-linux-gnu
lisp-implementation-type: CMU Common Lisp
lisp-implementation-version: CVS 19d 19d-release (19D)
-------------------------------------------------------------
The above information is also available from the Maxima function build_info().