(adsbygoogle = window.adsbygoogle || []).push({}); eigenfunctions. help!!

I would be very grateful for any help on the following question:

Find any single eigenvalue-eigenfunction pair, with a real eigenvalue, for the

following operator:

[itex]\textit{L}[/itex] = ([itex]\partial^2[/itex]/[itex]\partial[/itex]x) + ([itex]\partial[/itex]/[itex]\partial[/itex]x) + 2Id

subject to the initial boundary conditions u(0)=u(pi)=0

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# Eigenfunctions. help

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