Problem Statement-A common emitter amplifier as shown has the following design parameters:BIT intrinsic narameters. \beta_{\mathrm{f}}=80, \mathrm{r}_{\pi}=1600 \Omega, \mathrm{C}_{\pi}=10 \mathrm{pF}, \mathrm{C}_{\mu}=10 \mathrm{pF} External resistors are- R_{s}=200 \Omega, R_{1}=7000 \Omega, R_{2}=4500 \Omega, R_{t}=300 \Omega, R_{c}=5 \mathrm{k} \Omega, R_{t}=5 \mathrm{k} \Omega External capacitors C_{1}=10 \mu \mathrm{F}, C_{2}=2 \mu \mathrm{F}, C_{E}=100 \mu \mathrm{F}, C_{x}=10 \mathrm{pF} Use short-circuit zero value single time-constant method to calculate Midband gain vo/vs Low frequency poles due to the three capacitors C1, C2, and CE An estimate of the lower 3-dB frequency, fi. The high frequency poles An estimate of the 3-dB frequency, fu