Math Help - Finding the partial derivatives

1. Finding the partial derivatives

Hi
I need someone to check my work and tell me if I have made any mistakes.

Thanks

2. Re: Finding the partial derivatives

so that anyone interested may view the attachment ...

3. Re: Finding the partial derivatives

$\frac{\partial{f_1}}{\partial{N_2}} = 0 + N_1(-aN_2') = -aN_1$

4. Re: Finding the partial derivatives

Originally Posted by Amer
$\frac{\partial{f_1}}{\partial{N_2}} = 0 + N_1(-aN_2') = -aN_1$
Thank you!