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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