\(z^2-\left(1+\beta-(1-\nu\beta)\eta\lambda\right)z+\beta\!\left(1-(1-\nu)\eta\lambda\right)=0\)
\(\operatorname{Re}(z)\)\(\operatorname{Im}(z)\)\(-1\)\(1\)\(i\)\(-i\)\(0\)
\(\bubbleforce=\)