Solving Harmonic Function: Find v(x,y) for u + iv Analytic on C

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SUMMARY

The discussion focuses on finding the harmonic function v(x,y) that complements the given harmonic function u(x,y) = e^(-x)sin(y) to ensure that u + iv is analytic on the complex plane C. The solution derived is v(x,y) = e^(-x)cos(y) + K, where K is a constant. The Cauchy-Riemann equations were referenced as a method for establishing the relationship between u and v, confirming that the functions are indeed analytic together.

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Homework Statement


I have shown that u(x,y) = e-xsin(y) is harmonic. That is uxx+ uyy = 0. How do I find a harmonic function v(x,y) such that u + iv is analytic on C.


Homework Equations





The Attempt at a Solution


I tried to find v(x,y) in the same fashion as you find a scalar potential, given a gradient but that was no go.
Would I find the Cauchy-Riemann equations & go from there?
 
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Never mind. Got it.
It was v(x,y) = e-xcos(y) + K
 

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