# Complex Analysis Problem (analytic and harmonic functions)

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(a) Show that an analytic function f(z) defined in a simply connected domain Î© is constant if R(f(z)) (= the real part of f(z)) is constant throughout Î©.

(b) Let f(z) be analytic and non-vanishing in a domain Î©. Show that ln l f(z) l is a harmonic function in Î©.

Textbook:

"Fundamentals of Complex Analysis with Applications to Engineering, Science, and Mathematics" 3rd Edition, Saff and Snider, Prentice Hall.

https://brainmass.com/math/complex-analysis/complex-analysis-problem-analytic-and-harmonic-functions-278718

#### Solution Summary

This solution goes through a complex analysis problem which pertains to analytic and harmonic functions.

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