- #1

Kuma

- 134

- 0

## Homework Statement

Given a parameterized surface:

C(u,v) = (3 cos u sin v, 2 sin u sin v, cos v) 0<u<2pi, 0<v<pi

I have to find a normal vector to that surface.

## Homework Equations

## The Attempt at a Solution

So tangent vectors can be Tu = (dx/du, dy/du, dz/du) and Tv = (dx/dv, dy/dv, dz/dv)

And I can take the cross of those to find a normal vector. But what points of u and v do i use? The cross product gave me:

(-2sin^2 v cos u, 3sin^2 v sin u, 6sin^2 u sin^2 v - 6 cos^2 u sin^2 v)