The only way to do it presently is to subclass Function manually:
class f(Function):
is_real = True
Aaron Meurer
On Sat, Sep 19, 2015 at 2:47 PM, brombo <abrombo...@gmail.com> wrote:
> Your method works for a function, but not the derivative of a function -
>
> x = Symbol('x',real=True)
>
> f = RealFunction('f')(x)
>
> print re(f)
> f
> print im(f)
> 0
>
> df = f.diff(x)
> print re(df)
> re(df)
> print im(df)
> im(df)
>
> What should happen is that re(df) = df and im(df) = 0, but is doesn't
> happen. Any suggestions?
>
>
>
>
> On Saturday, September 19, 2015 at 12:58:53 PM UTC-4, brombo wrote:
>>
>> How do I define a real function of a real variable?
>>
>> X = symbols('x y z',real=True)
>>
>> f = Function('f',real=True)(*X)
>>
>> "real=True" in Function doesn't do anything.
>
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