The problem asks students to use the epsilon-delta definition of the limit of a function to show that the limit as [i]x[/i] approaches 1 of [math]x^2+1[/math] is 2. Students can manipulate the epsilon interval around 2 (on the y-axis) and also the delta interval around 1 (on the x-axis) to demonstrate (within the limits of the applet) that they are always able to find a delta that "fits" within the epsilon interval.
