¡¥determine: (20points) a. re (4points) b. Zi (4points) c. Zo (4points) d. AV (4points) e. Vo if Vi=2mV (4points) Figure 3 4. For the cascade amplifier of fig.4, calculate the followings: (20points) a. VBQ1 (5points) b. ICQ2 (5points) c. Vo when Vs is an ac signal and has the amplitude of 10mV. (10points) Figure 4 5. For the common-base network