Discontinuity - with epsilon-delta
Multi-purpose applet
This applet can be used for the following goals:
1. To explain non-existence of a limit of a function at a certain point
2. The difference between limit-on-the-left and limit-on-the-right
3. Discontinuity of a function at a certain point
Pay attention to the relations between the red and the green lines.
The x-coordinate can move. Something else moves accordingly.