I am to find a function U, harmonic on the disk [tex] x^2 + y^2 < 6 [/tex] and satisfying(adsbygoogle = window.adsbygoogle || []).push({});

[tex] u(x, y) = y + y^2 [/tex] on the disk's boundary. I am not sure where to start. Hints, help, anything?

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# Harmonic function

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