MHB Understanding the Harmonic Function Problem

[jaychay]

Please help me I am struggle with this question
Thank you in advance

 

[Prove It]

Well, do you know what a Harmonic Function is?

In this case, to be Harmonic, you would need $\displaystyle \begin{align*} \frac{\partial ^2 u}{\partial x^2} + \frac{\partial ^2 u}{\partial y^2} = 0 \end{align*}$...

 

[jaychay]

Well, do you know what a Harmonic Function is?

In this case, to be Harmonic, you would need $\displaystyle \begin{align*} \frac{\partial ^2 u}{\partial x^2} + \frac{\partial ^2 u}{\partial y^2} = 0 \end{align*}$...

Thank you for helping me