Comment #1 on issue 1981 by smichr: lambert simplifications
http://code.google.com/p/sympy/issues/detail?id=1981
The following simplifications of expressions containing the
LambertW function were added to the automatic simplifications:
exp(LambertW(x)) -> x/LambertW(x)
log(LambertW(x)) -> log(x) - LambertW(x)
Lambert(-pi/2) -> I*pi/2
Aaron and I were talking about whether this should be automatic or not. I
hardly ever use LambertW but my feeling was that these simplifications are
akin to exp(log(x)) -> x and exp(0)-> 1 sorts of things. Only the middle
one is questionable to me (and I think I would put that one in log's
expand).
Does anyone else have opinions about this?
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