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+//Example 7.3
+
+clc;clear;close;
+fp=2000;        //passband frequency
+F=9600;         //sampling frequancy
+
+//Calculation of filter co-efficients
+a0=1/F*integrate('1','t',-fp,fp);
+for n=1:10;
+a(1,n)=2/F*integrate('cos(2*%pi*n*f/F)','f',-fp,fp);
+end
+h=[a(:,$:-1:1)/2 a0 a/2];
+
+//Displaying filter co-efficients
+disp(F,'Sampling frequency F= ',fp,'Assumption: Passband frequency fp= ');
+disp('Filter co-efficients:');
+disp(a0,'h(0)= ');disp(a/2,'h(n)=h(-n)=');
+
+n=-10:10;
+plot2d3(n,h);
+title('Filter transfer function h(n)');xlabel('n-->');
+\ No newline at end of file