ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Fri, 23 Mar 2012 14:11:38 +0100Is there any way to define an as-yet-unknown function?https://ask.sagemath.org/question/8822/is-there-any-way-to-define-an-as-yet-unknown-function/I'd like to know if there's a way of declaring functions in sage that are as-yet unknown. For example, let's say I have a function
p = R*T/v - a(T)/v/(v+b)
And I would like to be able to take a derivative like this
deriv(p,T)
and be given something back a partial derivative something like
R/v - diff(a(T),T)/v/(v+b)
However at present I can't seem to put an abstract function `a(T)` into my expression or find anything in the documentation that says how this is done.
As I recall there was a way to do this with wxMaxima, so maybe I just haven't found the trick in Sage yet.
jdpipeFri, 23 Mar 2012 14:11:38 +0100https://ask.sagemath.org/question/8822/