Hi!
Thanks for the bugfix. I encountered what might be a related bug:
In [1]: dsolve(f(x).diff(x)-x*exp(-k*x),f(x))
Out[1]:
⎛⎧ 2 ⎞
⎜⎪ x 3 ⎟
⎜⎪ ── for k = 0⎟
⎜⎪ 2 ⎟
⎜⎪ ⎟
f(x) = C₁ + ⎜⎨⎛ 2 ⎞ -k⋅x ⎟
⎜⎪⎝- k ⋅x - k⎠⋅ℯ ⎟
⎜⎪────────────────── otherwise ⎟
⎜⎪ 3 ⎟
⎜⎪ k ⎟
⎝⎩ ⎠
In [2]: dsolve(-f(x).diff(x)+x*exp(-k*x),f(x))
Where the last row results in an unhandled exception..
I opened an issue at: http://code.google.com/p/sympy/issues/detail?id=3890
Cheers!
/Björn
On Thursday, 13 June 2013 14:30:15 UTC+2, Julien Rioux wrote:
>
> On Thursday, 13 June 2013 07:28:57 UTC-4, Björn Dahlgren wrote:
>>
>> But we would expect k**3 case to correspond to x**2/2.
>>
>>
> Thank you for your bug report. I reproduced it and opened
> http://code.google.com/p/sympy/issues/detail?id=3886
>
> Cheers,
> Julien
>
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