> it works if you use a python function:
>
> def z(x):
> return ((floor(log(x,10)))+1)*(1+x-((10^floor(log(x,10)))))
>
> for some reason it does not evaluate floor when evaluating symbolic
> functions.
This is because floor?? says that
#. If none of the above work, Sage returns a
symbolic ``Expression`` object.
However, if you numerically evaluated the logs before passing them to
the floor, that should work. This is a feature, so that people don't
have to have log(3143,10) always be turned into a decimal, even if
inside other symbolic functions.
Please let us know if these things don't help.
- kcrisman
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