CALC 3 > 10.5: Parametric Surfaces > Flashcards
Surface
3D shape
surface of r(t) = <cos(t), sin(t), t>
helix around a cylinder
how many parameters do you need to describe surfaces?
2 (usually u and v)
definition of a parametric surface
r(u,v)= <x(u,v), y(u,v), z(u,v)>