Chapter 4, Problem 4.31P

The open−circuit $\left(R_L=\infty \right)$ voltage gain of the ac equivalent source− follower circuit shown in Figure P4.31 is $A_{\upsilon }=0.98$ . When $R_L$ is set to $1\text{k}\Omega$ , the voltage gain is reduced to $A_{\upsilon }=0.49$ . What are the values of $g_m$ and $r_o$ ?

Figure P4.31