Suppose that the transfer function of a digital filter is given by [frac{(z-1)^{2}}{z^{2}+left(m_{1}-m_{2} ight) z+left(1-m_{1}-m_{2} ight)}] Plot

Suppose that the transfer function of a digital filter is given by

\[\frac{(z-1)^{2}}{z^{2}+\left(m_{1}-m_{2}\right) z+\left(1-m_{1}-m_{2}\right)}\]

Plot a graph specifying the region of the \(m_{2} \times m_{1}\) plane in which the digital filter is stable.