Multi-variable Calculus : Partial differentiation

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smart_worker
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Homework Statement


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2. The attempt at a solution
By chain rule,
math2.JPG


which simpifies to,

math 3.JPG

After this I am struck.
 
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Take into account [itex]\frac{\partial}{\partial u}=\frac{\partial x}{\partial u}\frac{\partial}{\partial x} + \frac{\partial y}{\partial u}\frac{\partial}{\partial y}[/itex] and similarly for v.