One way to solve the above circuit is to write KCL equations and solve, but it is too lengthy. Another way is to look at the circuit for high frequency and low frequency and find the poles and zeros for the appropriate sections of the circuit. I wanted to get the transfer function for both this analysis for which I can't find any resource.
For the dominant pole and zero, I found a circuit which seems correct. For the second pole, my analysis goes wrong somewhere. I have attached my solutions for dominant pole and zero of the circuit here:
Can someone explain how to find a suitable approximate circuit for determining the second pole as well as the transfer function of the circuit?