Question Number 32094 by NECx last updated on 19/Mar/18
$${Find}\:{the}\:{ordinary}\:{argument} \\ $$$$\left({arg}\:{z}\right)\:{and}\:{the}\:{principal}\:{argument} \\ $$$$\left({Arg}\:{z}\right)\:{of}\:{z}=\frac{{i}}{−\mathrm{2}−\mathrm{2}{i}} \\ $$