Find the partial derivatives of the function

cwesto · Feb 26, 2009

The problem:
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.

Oerg · Feb 26, 2009

use the quotient rule for differentiation? or product rule but with (9+7y)^(-1) for eg.

is this homework? it looks like the wrong forum to me

cwesto · Feb 26, 2009

Oh sorry.

Find the partial derivatives of the function

Discussion

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Find the partial derivatives of the function

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