The problem:(adsbygoogle = window.adsbygoogle || []).push({});

f(x,y)=-[tex]\frac{-7x-2y}{9x+7y}[/tex]

find:

f_{x}(x,y)

f_{y}(x,y)

The attempt:

f_{x}(x,y)=[tex]\frac{-7-2y}{9+7y}[/tex]

f_{y}(x,y)=[tex]\frac{-7x-2}{9x+7}[/tex]

Questions:

I'm not exactly sure how to find the partail derivative with a fraction like this one.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Find the partial derivatives of the function

**Physics Forums | Science Articles, Homework Help, Discussion**