Comment #2 on issue 3638 by [email protected]: Automatic series
expansion while applying a function?
http://code.google.com/p/sympy/issues/detail?id=3638
Automatic evaluation is very difficult to have not happen
Sympy already has some kind of it (present eval() methods for functions).
The question is up to which degree we should keep unevaluated expressions.
Is there any real reasons to keep things like log(1+O(x)) and not evaluate
this to O(x) just like sin(0)? Or keep powers like (1+x+O(x**2))**3?
(n.b.: attached patch doesn't touch powers.)
And that's not to mention that this can be an expensive operation in
general
Hmm, why in this case?
Attachments:
sauto.patch 2.9 KB
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