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+//pagenumber 427 example 5
+clear
+g=2.6*10^-3;//ampere per volt
+rd=7.7*10^3;//ohm
+rd1=12*10^3;//ohm
+cb=0.005*10^-6;//farad
+//(1) voltage gain
+volgai=g*((1/rd)+1/rd1+1/(1*10^3));
+volgai=(20*(log10(10.8)))*3;
+disp("overal voltage gain   =   "+string((volgai))+"decibel");//correction in the book
+//(2) lower frequency
+r=rd*rd1/(rd+rd1);
+freque=1/((2*3.14)*(r+1*10^6)*cb);
+disp("lower frequency of each   =   "+string((freque))+"hertz");
+//(3) overal lower frequency
+freque=freque*1.96;
+disp("lower frequency overal   =   "+string((freque))+"hertz");
+
+