Average Value of a Quadratic Function Over a Closed Interval: ax-x^2 May 19, 2022May 19, 2022 mathispower4u VI. Calculus Videosapplication, area, average, calculus, function, integral, integration, james, mathispower4u, quadratic, sousa, value This video explains how to determine the average value of a function over a closed interval. Rate this:Like Loading... Related