Hi everyone.
i really want to know A (voltage gain)
Is it considered feedback??? (consider Z?)
or it is not included feedback? to neglect Z and solve A, and use miller's theorem to remove feedback??

Umm.. simply i ask A is whole voltage gain or voltage gain except feedback impedence Z
thank u

 

What circuit are you referring to?

 

this circuit
Is that K voltage gain except Z?? OR including Z??