# Derivatives Don't Match Up

1. Oct 24, 2005

### Icebreaker

"Let $$F(x,y)=( -y/(x^2+y^2),x/(x^2+y^2))$$

(a)Show that $$\frac{\partial F_1}{\partial y}=\frac{\partial F_2}{\partial x}$$ except at the origin."

Is it me or are they not actually equal?

2. Oct 24, 2005

Nevermind.