$V_{th}=\dfrac{18\times33}{133}=4.47$  $R_{th}=\dfrac{100\times33}{133}=24.8$  $18-2I_C-V_{CE}-1I_C=0\ V_{CE}=18-3I_C\ 47-24.8I_B-0.7-\beta I_B=0\ \left(\dfrac{24.8}{\beta}+1\right)I_C=37.7\ I_C\times1.124=37.7\ I_C=3.354mA$  $r_{\pi}=\dfrac{\beta}{gm}=\left(\dfrac {200}{0.129}\right)=1550.3\Omega\ gm=\dfrac{I_C}{V_T}=\left(\dfrac{3.35}{26}\right)=0.129\ r_0=\dfrac{v_A+v_{CE}}{I_C}=\dfrac{100+B}{3.35}=32.3\Omega$