Where Req2 is where the capacitor is, looking into the circuit.
It took me one page of working out using KVL using a test voltage Vt, and the associated current iT, then doing Vt/iT and getting a large equation in terms of all the circuit variables to get Req2 = 16K, when the answer is 15k doing some method I do not really understand.
Would it make sense to use a test voltage and get the equivalent resistance?
Can someone explain what exactly was done?
Rc1 = 15k
Re2 = 9k
Rpi2 = 1.4k
gm2 = 107.1mS
Rc2 = 15k
RL = 10k