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+// Example 4.12
+clc;
+clear;
+close;
+format('v',7);
+// Given data
+fa= 1;// in kHz
+fa= fa*10^3;// in Hz
+Vp= 1.5;// in V
+f= 200;// in Hz
+C= 0.1*10^-6;// in F
+t= poly(0,'t');
+R= 1/(2*%pi*fa*C);// in Ω
+R= 1.5;// in kΩ (standard value)
+fb= 20*fa;// in Hz
+R_desh= 1/(2*%pi*fb*C);// in Ω
+R_desh= 82;// in Ω (standard value), so
+R_OM= R;// in kΩ
+// Vin= Vp*sin(omega*t)= Vp*sin(2*%pi*f)*t
+disp("The input votage : Vin = "+string(Vp)+ " sin(400*%pi*t)")
+RC= R*10^3*C;// in ΩF
+V= -RC*Vp*400*%pi;
+//Vout= -RC*dVin/dt= -RC*Vp*400*%pi*cos(400*%pi*t)
+disp("The output voltage : Vout = "+string(V)+" cos(400*%pi*t)")
+x=[0:0.1:5*%pi/2];
+plot(V*cos(x))
+title("output Waveform");
+xlabel("---- Time ---->");
+ylabel("---- output voltage ---->");
+disp("output Waveform is shown in figure.")
+
+
+
+