Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 3890 by [email protected]: dsolve failing for an equality
muliplied by -1
http://code.google.com/p/sympy/issues/detail?id=3890
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 latter raises an unhandled exception.
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