How does one tell if something is a function?



-----maxima-admin@math.utexas.edu wrote: -----

> Nevermind, found mfboundp.

There's a problem using mfboundp.

(%i1) f(x) := x$
(%i2) to_lisp()$
Type (to-maxima) to restart
MAXIMA>(mfboundp '$f)
NIL
MAXIMA>(mfboundp '|$f|)
(MEXPR ((LAMBDA) ((MLIST) |$x|) |$x|))

How does one convert $f to |$f|?

 mcgdog