On Apr 3, 2:32 pm, pallab <pallabb...@gmail.com> wrote: > Is there any way to check whether a symbolic expression is a > derivative. Like, > > isinstance(diff(f(x),x),"what to put?") > > gives "True" > > and > > isinstance(f(x),"what to put?") > > gives false, assuming f is not a derivative itself.
One can do the following, for example, def is_diff(expr): try: return isinstance(expr.operator(), sage.symbolic.operators.FDerivativeOperator) except (AttributeError): return False Alec Mihailovs -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe, reply using "remove me" as the subject.