#12801: substitute_function misses some substitutions
-------------------------+--------------------------------------------------
Reporter: nbruin | Owner: burcin
Type: defect | Status: new
Priority: minor | Milestone: sage-5.0
Component: symbolics | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
-------------------------+--------------------------------------------------
Works correctly:
{{{
sage: f=function('f')
sage: g=function('g')
sage: (f(g(x))+g(x)).substitute_function(g,sin)
sin(x) + f(sin(x))
}}}
but
{{{
sage: f(g(x)).diff(x).substitute_function(g,sin)
cos(x)*D[0](f)(g(x))
sage:
sage.symbolic.operators.FDerivativeOperator(f,[0])(g(x)).substitute_function(g,sin)
D[0](f)(g(x))
}}}
so I suspect it forgets to descend into the arguments of an
FDerivativeOperator
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12801>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" 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/sage-trac?hl=en.
