Could you elucidate further or give me a link. I don't have a clue to implement what you suggested.
On Saturday, September 19, 2015 at 6:00:11 PM UTC-4, Aaron Meurer wrote: > > 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 <[email protected] <javascript:>> > 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. > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to [email protected] <javascript:>. > > To post to this group, send email to [email protected] > <javascript:>. > > Visit this group at http://groups.google.com/group/sympy. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/sympy/6a732f8b-c09a-440e-b524-145343e1a499%40googlegroups.com. > > > > > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/0c906880-41fe-41bb-82ea-ae6ddcb3848f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
