The Fundamental Theorem of Calculus Part 1 (applet 1/2)

This applet helps visualize the Fundamental Theorem of Calculus Part 1. It should be opened side-by-side (or better top-to-bottom) with the other applet that shows [math]F(x)[/math] (the "area so far" function).

Drag the dot labeled "x" from 0 to 5.