Maxima Function
dispform (expr)
Returns the external representation of expr with respect to its
main operator. This should be useful in conjunction with part
which
also deals with the external representation. Suppose expr is -A .
Then the internal representation of expr is "*"(-1,A), while the
external representation is "-"(A). dispform (expr, all)
converts the
entire expression (not just the top-level) to external format. For
example, if expr: sin (sqrt (x))
, then freeof (sqrt, expr)
and
freeof (sqrt, dispform (expr))
give true
, while
freeof (sqrt, dispform (expr, all))
gives false
.