Question Number 201715 by aurpeyz last updated on 11/Dec/23
$${Use}\:{Cauchy}\:{Riemann}\:{to}\:{verify}\:{whether}\: \\ $$$${f}\left({z}\right)=\frac{\mathrm{1}}{{z}\left({z}+\mathrm{1}\right)}\:{is}\:{analytic}. \\ $$
Use-Cauchy-Riemann-to-verify-whether-f-z-1-z-z-1-is-analytic-