67/CH7/EX7.5/example75.sce


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//Example 7.5
clc;
syms Wo n z;
x1=exp(sqrt(-1)*Wo*n);
X1=symsum(x1*(z^-n),n,0,%inf);
x2=exp(-sqrt(-1)*Wo*n);
X2=symsum(x2*(z^-n),n,0,%inf);
X=(X1+X2)/2;
disp(X,'X(z)=');