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### Course: Pixar in a Box>Unit 11

Lesson 1: Modeling grass with parabolas

# 3. Parabolic arcs

Are we really creating parabolic curves using this construction? Let's gain some insight first.

## Want to join the conversation?

• Don't we already know that this is a parabola? Why is he questioning it?
(1 vote)
• No, and in fact that's not obvious. There are a lot of curves that look parabolic, for example, circle arc, ellipse arc, logarithm, etc. They all have different equations. We're trying to prove that in our case equation would be quadratic.
• Does this video work on big iPads? Because it doesn’t seem to work for me.
(1 vote)
• mean? you .
(1 vote)
• I did not understand any of the midpoint formula fro the last lesson when you answer the questions it didn't even tell me how to do it?
(1 vote)
• it but it's really really really stressing me out (like, a lot). Do I really need to know all the technical stuff with animation? If I wanted to learn math, I would take a math lesson. I want to learn animation, so PLEASE if there's going to be any math just keep it simple. This is very confusing and stressful! I want to learn JUST animation! NOT math!
(1 vote)
• This kind of animation has a lot of math in it. If you want to do a course that is easy math-wise, try the colors course.