Comment #6 on issue 3646 by [email protected]: Weird solution of x**y =
0
http://code.google.com/p/sympy/issues/detail?id=3646
Yes, plenty of tests still fail. As I mentioned above, these tests somehow
implicitly depend upon the fact that 0**x != 0.
As a matter of fact, some of the failing tests seem to be completely
unrelated to this issue. For ex,
1. acos(1 - x**2)._eval_nseries(x, 2, None) == sqrt(2)*x + O(x**2)
2. trigsimp((tan(x)**2 + 1 - cos(x)**-2) / (sin(x)**2 + cos(x)**2 - 1)) ==
nan
Of course, series might use the power result somewhere inside but these two
are just examples. Tests are also failing while some using .subs(). Go
figure.
And several others as well. This issue, therefore, seems to be deeply
integrated in the SymPy core. Fixing it completely will likely require a
complete overhaul of calculation of powers.
--
You received this message because this project is configured to send all
issue notifications to this address.
You may adjust your notification preferences at:
https://code.google.com/hosting/settings
--
You received this message because you are subscribed to the Google Groups
"sympy-issues" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sympy-issues?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
