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+//chapter22
+//example22.11
+//page498
+
+V_DD=30 // V
+I_D1=2.15d-3 // A
+I_D2=9.15d-3 // A
+R_D1=8.2d3 // ohm
+R_D2=2d3 // ohm
+R_S1=680 // ohm
+R_S2=220 // ohm
+
+V_RD1=I_D1*R_D1
+V_D1=V_DD-V_RD1
+V_S1=I_D1*R_S1
+
+V_RD2=I_D2*R_D2
+V_D2=V_DD-V_RD2
+V_S2=I_D2*R_S2
+
+printf("For stage 1 : dc voltage of drain = %.3f V and source = %.3f V \n",V_D1,V_S1)
+printf("For stage 2 : dc voltage of drain = %.3f V and source = %.3f V \n",V_D2,V_S2)