Hi, could you please help with the integration of this equation:(adsbygoogle = window.adsbygoogle || []).push({});

$$\int_{x}\int_{y}\frac{\partial}{\partial y}\left(\frac{\partial u}{\partial x}\right)\,dydx$$

where ##u(x,y)## . From what I remember, you first perform the inner integral i.e. ##\int_{y}\frac{\partial}{\partial y}\left(\frac{\partial u}{\partial x}\right)dy## but I am not really sure where to go from there. I'm too old for homework so please don't assume that it is. Thank you in advance. A reference would be good anough too.

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# Problem integrating a double integral

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