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+//Chapter 3
+//Example 3-1
+//ProbOnOpampDescriptions 
+//Page 46,47 figure 3-1
+clear;clc;
+//Given
+Rf=100*(10^3);//Feedback Resistance in ohms
+Ri=10*(10^3);//Input Resistance in ohms
+Ei=1;//Input volts
+//Calculate 
+//Example 3-1(a)
+I=Ei/Ri;//Equation for current through Rf
+printf("\n\n Current through Rf =  %.4f A \n\n",I)
+//Example 3-1(b)
+Vout=-(Rf/Ri)*Ei;//Equation for Output Voltage
+printf("\n\n Value of output voltage =  %.4f V \n\n",Vout)
+//Example 3-1(c)
+Acl=-(Rf/Ri);//Closed loop gain of the amplifier 
+printf("\n\n Value of closed loop gain =  %.4f \n\n",Acl)
+\ No newline at end of file