Friday, May 19, 2017

complex analysis - Find the real and Imaginary part of zz.

Find the real and Imaginary part of zz.




My approach: If z=reiθ, then zz=exp(zln(z))=exp(reiθ(ln(r)+i(θ+2kπ))
=exp(r(cos(θ)+isin(θ))(ln(r)+i(θ+2kπ)))
=exp(r(cos(θ)ln(r)sin(θ)(θ+2kπ))+ir(cos(θ+2kπ)+sin(θ)ln(r)))



And continuous with this development, I can find Imaginary and real part, but is this correct?? Exist any approach more easy?? Regards!

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