Comment #79 on issue 1694 by nicolas.pourcelot: solve has many issues with
fractions
http://code.google.com/p/sympy/issues/detail?id=1694
Thanks Aaron.
What happens if I do some modification locally, and use git fetch after ?
@Vinzent (77)
"For Adds, factor() might be a good idea."
+1
And for what I can see, factor() has been greatly improved recently ! (It
applied only to polynomials the last time I played with it).
solve(x*ln(x)-x*ln(x)**2, x)
NotImplementedError: Unable to solve the equation(tsolve: at least one
Function expected at this point
solve(factor(x*ln(x)-x*ln(x)**2), x)
[0, e, 1]
This test should be added (or an equivalent one) in test_solvers.py
assert solve(x*ln(x)-x*ln(x)**2, x) == [0, e, 1]
By the way, is there any reason for solve() to return lists instead of
sets ?
Actually, the order of the solutions is an implementation detail, and
should not appear in test_solvers.py (but it may be too much of work just
to change it).
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