For the circuit provided find the voltage gain Av $=$ V$0/$vsig and the input resistance Rin seen by the source vsig.$$ Assume that the source provides a small signal vsig, and the transistors and circuit parameters are given as:

Vbe $=0\mathrm{.}7$ V

VA $=$

$=90$

VT $=0\mathrm{.}025$ V

I$1=4$ mA

Rc $=150$ k$$

RL $=30$ k$$

Rsig $=100$

Ic $=$

mA

gm $=$

mS

r $=$

k$$

Av $=$

V$/$V

Rin $=$

$$