I have a battle with the following direct partial integration and separation of variables toffee:(adsbygoogle = window.adsbygoogle || []).push({});

I have to solve,

[itex]u(x,y)=\sum_{n=1}^{∞}A_n sin\lambda x sinh \lambda (b-y)[/itex]

If there were no boundary or initial conditions given, do I assume that λ is [itex]\frac{n\pi}{L}[/itex] and do I then solve [itex]A_n[/itex]? If I am going in the wrong direction here, please point me in the right direction... thanks!

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# How do one solve this PDE

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