Microelectronics international student version (behzad razavi) 第五章习题答案3.computetheinputresistanceofthecircuitsdepictedinFig.AssumeVai C C C K R R Ri K K b Faute 5i+ Solution: )Rn=R1‖R2‖r DR=R + r )R=71+(4+A)+n2+R ()Rn=R1+[R2(71+(1+A)2) 4. Compute th