The circuit parameters of the ideal shunt-series amplifier shown in Figure 12.9 are \(I_{i}=20 \mu \mathrm{A}, I_{f b}=19 \mu \mathrm{A}, R_{i}=500 \Omega, R_{o}=20 \mathrm{k} \Omega\), and \(\beta_{i}=\) \(0.0095 \mathrm{~A} / \mathrm{A}\). Determine the values and units of \(I_{\varepsilon}, I_{o}, A_{i}, A_{i f}, R_{i f}\), and \(R_{o f}\).