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+//Chapter 10
+//Sketch the output Waveform 
+//page no.  370
+//Example10_8
+//Figure 10.24a
+//Given
+clc;
+clear;
+Ri=250;           //in Ohm
+Ci=0.5*10^-6;           //in farad
+Rf=40000;           //in Ohm
+Cf=2*10^-9;           //in farad
+fhf=1/(2*%pi*Rf*Cf);
+fh_in=1/(2*%pi*Ri*Ci);
+printf("\n Fhigh(f dbk)=%.0f Hz",fhf);
+printf("\n Fhigh(in)=%.0f Hz",fh_in);
+//
+
+S=10;           //in V/S
+step=1;
+disp(S,"For slope")
+t=0:step:1;
+Vin=10*t;
+dy=diff(S*t/step); //approximate differentiation of sine function
+Vout=-Rf*Ci*dy;
+printf("\n Vout(t) = %.1f V",Vout);
+//
+Slope=-4/0.2;           //in V/S
+step=1;
+disp(Slope,"For slope")
+t=0:step:1;
+Vin=10*t;
+dy=diff(Slope*t/step); //approximate differentiation of sine function
+Vout2=-Rf*Ci*dy;
+printf("\n Vout(t) = %.1f V",Vout2);
+//graph
+t=(0:0.0001:1.5);
+V=Vout*ones(0:0.0001:.2);
+V=[V zeros(.2+.0001:0.0001:.5-.0001)];
+V=[V Vout2*ones(.5:0.0001:.7)];
+V=[V zeros(.7+.0001:0.0001:1-.0001)];
+V=[V Vout*ones(1:0.0001:1.2)];
+V=[V zeros(1.2+.0001:.0001:1.5)]
+clf;
+plot(t,V)
+
+xtitle('Differentiator output','$t$',"$Voltage$")