Given that the branch logz=lnr i θ(r>0, α<θ<α 2 π) of the logarithmic function is analytic at each point z in the stated domain, obtain its derivative by differentiating each side of the identity (logz)=z (Sec. 29) and using the chain rule. | Numerade

prove that f(z) = xy iy isnot analytic at any point

don't show Analytic tag in odoo v16?