Comment #26 on issue 1816 by asmeurer: Adding partial derivatives and
taking derivatives with respect to functions
http://code.google.com/p/sympy/issues/detail?id=1816
OK, I think I get it now (after comment 23 it "clicked" for me).
So I think I am +1 to this now, even with the strange .diff(cos) thing.
My only thing (again) is that I would like to see this explained in the
docstring, as you can see from the discussion above that this is very
confusing.
Also, I'm still not 100% mathematically convinced that diff(f(x),
x).diff(f(x)) should be 0. Can you cite an example of somewhere where this
is computed as so with the Lagrangian?
--
You received this message because you are subscribed to the Google Groups
"sympy-issues" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sympy-issues?hl=en.
