Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 2820 by [email protected]: expand() doesn't work in the
denominator
http://code.google.com/p/sympy/issues/detail?id=2820
Quoting Bastian Weber from the mailing list:
Hello,
I just got some results that I belive not beeing expected by the average
user:
In [6]: x = 1/(b*(1/b - b))
In [7]: x.expand()
Out[7]: 1/(b*(-b + 1/b))
I would have expexted
1/(1-b**2) or something like this.
However, if I enter the denominator separately I get the expected result:
In [9]: y = b*(1/b - b)
In [10]: y.expand()
Out[10]: -b**2 + 1
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