Domain and Range of Functions
Press the Play button in the bottom left corner to activate point A. Point A will then oscillate along the x-axis.
Point B will follow the elements in the domain. The restricted domain will be the interval highlighted in red.
Point C will follow the elements in the range. The range will be the interval highlighted in blue.
It is also possible to change the function. If you scroll in or out then that will erase the highlights.