Parabola: Discovery of the Quadratic Curve

Topic:
Parabola

Parabolic Model: Satellite Dish

Click on the "Start Animation" button and watch the how waves travel on the satellite dish. What do you notice. Type your observation in the space below.

Move the slider for a and watch what happens to the graph

In the space below type what you see what happens when the value of a > 0 and a < 0.