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+//Example 6.25
+//Z transform of Vz , d0*v[n] + d1*v[n-1] = p0*d[n] + p1*d[n-1]; 
+//MAXIMA SCILAB TOOLBOX REQUIRED FOR THIS EXAMPLE
+clc;
+clear;
+syms p0 p1 d0 d1;
+z= %z;
+disp('given that v[n] -->  V(z).Using Time shifting property,we get : ')
+disp(' d0*Vz + d1*Vz*(1/z) = p0 + p1*(1/z) ');
+disp('Rearranging the terms ...');
+Vz = (p0 + p1/z)/(d0 + d1/z);
+disp(Vz,'Z-transform is Vz =');
+ 
+\ No newline at end of file