when does a function not have a limit
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.
Limitless (film) Limitless is a 2011 American science fiction film directed by Neil Burger. Based on the novel The Dark Fields by Alan Glynn, the film stars Bradley Cooper, Abbie Cornish, and Robert De Niro. The events portrayed in the film follow Edward Morra, a struggling writer, who is introduced to a nootropic drug called NZT-48, which gives him the ability to fully utilize his brain and vastly improve his lifestyle.