Updates:
Cc: -asmeurer
Labels: -NeedsBetterPatch NeedsReview
Comment #47 on issue 1694 by nicolas.pourcelot: solve has many issues with
fractions
http://code.google.com/p/sympy/issues/detail?id=1694
@smichr, in short (I've just lost my comment before posting it):
#comments 44,45
1) This patch does not intend to solve any single issue concerning solve().
If it solves some, and does not introduce any regression, then imho we may
apply it, and write other patches for remaining issues in the future.
2) "Also, why do you no longer throw away (or separately handle) the
denominator of the transcendental case?"
What I throw away is in fact a comment. (I throw it away since it was
unneeded in a previous and too ambitious version of this patch I didn't
published). I'll put it back.
#comment 46
Speed is indeed a concern.
As for numerical test, I already thought about that, and yet sympy is
supposed to be a symbolic library.
If checksolv() use numerical test, numerical error propagation may
introduce false answers for complicated expression. (Well, practically,
it's very unlikely if we choose a sufficient precision).
So, what's sympy policy concerning this ?
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