Hi, can someone check this is right:

Find

$\displaystyle \frac{\partial f}{\partial u}$ and $\displaystyle \frac{\partial f}{\partial v}$

for

$\displaystyle u^2 f(u,v) + vf^2 (u,v) = 1$

I got $\displaystyle \frac{\partial f}{\partial u} = \frac{-2fu}{u^2+2v}$