Status: Accepted
Owner: asmeurer
CC: [email protected]
Labels: Type-Defect Priority-Medium Polynomial WrongResult
New issue 2687 by asmeurer: factor(extension=[I]) gives wrong results
http://code.google.com/p/sympy/issues/detail?id=2687
In [73]: expand((x - I*y)*(z - I*t))
Out[73]: -ⅈ⋅t⋅x - t⋅y + x⋅z - ⅈ⋅y⋅z
In [74]: factor(expand((x - I*y)*(z - I*t)))
Out[74]: -ⅈ⋅t⋅x - t⋅y + x⋅z - ⅈ⋅y⋅z
In [75]: factor(expand((x - I*y)*(z - I*t)), extension=[I])
Out[75]: x + ⅈ⋅y
I don't know if extension=[I] would really help here, but it should at
least not give a wrong results.
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