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+//Example 4.3
+//MAXIMA SCILAB TOOLBOX REQUIRED FOR THIS PROGRAM
+
+clear;
+clc ;
+close ;
+
+j=sqrt(-1);
+syms w n z T j;
+f1=exp(j*w*T*n);
+F1=symsum(f1*(z^-n),n,0,%inf);
+f2=exp(-j*w*T*n);
+F2=symsum(f2*(z^-n),n,0,%inf);
+F=(F1-F2)/(2*j);
+//Display the result in command window
+disp (F,"Z-transform of sin(n*w*T) u(n) is:");
+disp('ROC is the Region mod(z) > 1);