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## Pixar in a Box

### Course: Pixar in a Box>Unit 3

Lesson 2: Mathematics of subdivision

# 3. Fun with weights

Let's take a closer look at the weights used during subdivision. Do we have to be careful when selecting weights?

## Want to join the conversation?

• How many different ways is/are Pascal Triangle used?
• Pascal's triangle is primarily used in the binomial theorem. It is basically a pattern triangle, which is practically infinite. You can look up the triangle, because I am unable to display it here, obviously. It is also used to expand binomials, such as (x-5y)^6.
• I don't understand the mathematics within subdivision. Please may someone HELP me?
• can it be in any direction
• sugestion talk louder on the videos i can hardley hear
(1 vote)
• Make your sound louder then.
• he sound remy from ratatouille
(1 vote)
• The video makes the claim that the coefficients 1, 2, 1 are pieces of degree 3 curves, like y = x^3. However, (x + y)^3 = x^3 + 3x^2*y + 3xy^2 + y^3, whose coefficients are 1, 3, 3, 1, not 1, 2, 1. Similarly, (x + y)^2 has coefficients, 1, 4, 6, 4, 1, not 1, 3, 3, 1. Is there a mistake here or am I not understanding something?
(1 vote)
• the math in here like "If y=x4" what do we add I know that it is math but?
(1 vote)
• does any one still play this game
(1 vote)
• where are the Lobsters 😩