Home › Forums › density functional theory › functions and functionals › Area under the curve This topic has 0 replies, 1 voice, and was last updated 2 months, 1 week ago by edugnoz. Viewing 1 post (of 1 total) Author Posts August 1, 2025 at 8:34 pm #12757 edugnozParticipant I think the area under the curve is an example of functional I mean, the integral of a function f(x) where the limits of integration are [a,b]. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In