# Multi-variable Calculus : Partial differentiation

1. Nov 4, 2014

### smart_worker

1. The problem statement, all variables and given/known data

2. The attempt at a solution
By chain rule,

which simpifies to,

After this I am struck.

2. Nov 4, 2014

### ShayanJ

Take into account $\frac{\partial}{\partial u}=\frac{\partial x}{\partial u}\frac{\partial}{\partial x} + \frac{\partial y}{\partial u}\frac{\partial}{\partial y}$ and similarly for v.