#7144: desolve does not use contrib_ode
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Reporter: robert.marik | Owner: burcin
Type: enhancement | Status: closed
Priority: minor | Milestone: sage-4.1.3
Component: calculus | Resolution: duplicate
Keywords: | Work_issues:
Author: robert.marik | Reviewer:
Merged: |
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Changes (by robert.marik):
* status: new => closed
* resolution: => duplicate
Old description:
> The following code fails
> {{{
> y=function('y',x)
> eqn=x*diff(y,x)^2-(1+x*y)*diff(y,x)+y == 0
> desolve(eqn,y)
> }}}
> However, Maxima is able to produce the solution using contrib_ode
> command. If ode2 fails, Sage should call contrib_ode
>
> maxima commands
> {{{
> load('contrib_ode)$
> eqn:x*'diff(y,x)^2-(1+x*y)*'diff(y,x)+y=0;
> contrib_ode(eqn,y,x);
> }}}
New description:
The following code fails
{{{
y=function('y',x)
eqn=x*diff(y,x)^2-(1+x*y)*diff(y,x)+y == 0
desolve(eqn,y)
}}}
However, Maxima is able to produce the solution using contrib_ode command.
If ode2 fails, Sage should call contrib_ode
maxima commands
{{{
load('contrib_ode)$
eqn:x*'diff(y,x)^2-(1+x*y)*'diff(y,x)+y=0;
contrib_ode(eqn,y,x);
}}}
will (hope) solved in few days together with 6479 which was supposed to be
fixed, but needs more work.
http://trac.sagemath.org/sage_trac/ticket/6479
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7144#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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