definite integral
signed area of the region in the plane that is bounded by the graph of a given function between two points in the real line
en-GB/ˈdɛfɪnət ˈɪntɪɡɹəl/
en-US/ˈdɛfənət ˈɪnəɡɹəl/
signed area of the region in the plane that is bounded by the graph of a given function between two points in the real line