- #1

Mangala

- 2

- 0

## Homework Statement

I need to find the unit normal vector to x

^{2}+z

^{2}=16. I can find the unit normal vector to every shape but a cylinder, and I can't seem to see how to do it.

## Homework Equations

[tex]\nabla[/tex]F=F

_{x}i+F

_{y}j+F

_{z}k

## The Attempt at a Solution

I know that I need to find the gradient of the surface equation. I've considered that this gradient may be i-2x-2z. Or am I completely wrong?

If you need more information please say what. Thank you!