Updates:
Status: Fixed
Labels: -NeedsReview PassedReview
Comment #9 on issue 1765 by asmeurer: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
OK. I see the magic. We agreed on IRC to add a little
Updates:
Cc: smichr
Comment #1 on issue 1765 by asmeurer: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
The 1st_linear part used to work. It was broken with this commit:
commit
Updates:
Labels: -WrongResult NeedsReview
Comment #2 on issue 1765 by smichr: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
branch 1765 at smichr's github has a new test (the one of this issue) and a
Updates:
Status: Started
Comment #3 on issue 1765 by asmeurer: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
That is the correct result (but let me review the code). Also, I was
wrong. (x**2 + y**2)dy =
Comment #4 on issue 1765 by smichr: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
and that's consistent with what sympy says now:
f=Function('f')
var('x');eq=(x**2 + f(x)**2)*f(x).diff(x) + 2*x*f(x)
x
Comment #7 on issue 1765 by asmeurer: classify_ode((x**2 +
f(x)**2)*f(x).diff(x) - 2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
I think you do not understand my question (or maybe I do not understand.
It is late here.) I am asking why you
have
r = {a:
Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium WrongResult
New issue 1765 by asmeurer: classify_ode((x**2 + f(x)**2)*f(x).diff(x) -
2*x*f(x), f(x)) is wrong
http://code.google.com/p/sympy/issues/detail?id=1765
In [53]: classify_ode((x**2 + f(x)**2)*f(x).diff(x) -
