#   f ⁿ(x)

###Example cases

f ⁿ(x)

Example cases

Solutions that take the f as a list of coefficients will probably be the most interesting, but if you are able to take f as an actual function (thereby reducing this challenge to the trivial "apply a function n times"), feel free to include it after your non-trivial solution.

Solutions that take f as a list of coefficients will probably be the most interesting, but if you are able to take f as an actual function (thereby reducing this challenge to the trivial "apply a function n times"), feel free to include it after your non-trivial solution.

If you take f as an actual function, thereby reducing this challenge to the trivial "apply a function n times", please include a non-trivial version where you take a list of coefficients.

Solutions that take the f as a list of coefficients will probably be the most interesting, but if you are able to take f as an actual function (thereby reducing this challenge to the trivial "apply a function n times"), feel free to include it after your non-trivial solution.