Complex Analysis: Theory and Applications · Problem 10.2.8

Applications of Harmonic Functions — Howell & Matthews

Mathematics — Complex Analysis · dirichlet-problem-unit-disk

Problem

Find the function ϕ(x,y)\phi(x,y) that is harmonic in the unit disk ∣z∣<1|z| < 1 and has the boundary values ϕ(x,y)=8 for x+iy=z=eiθ,  0<θ<π;\phi(x,y) = 8 \text{ for } x + iy = z = e^{i\theta},\; 0 < \theta < \pi; ϕ(x,y)=4 for x+iy=z=eiθ,  π<θ<2π.\phi(x,y) = 4 \text{ for } x + iy = z = e^{i\theta},\; \pi < \theta < 2\pi.

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