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+//Example 3.17 Transformations
+
+clear;
+clc;
+//-------------------------------------------------------------------
+//Coefficients of numerator and denominator of the transfer function
+numG=[9 3];
+denG=[25 6 1];
+
+// Transfer function
+Ns=poly(numG,'s','coeff');
+Ds=poly(denG,'s','coeff');
+sysG=syslin('c',Ns/Ds);
+
+//gain (K) pole (P) and zeros (Z) of the system
+temp=polfact(Ns);
+Z=roots(Ns); //locations of zeros
+P=roots(Ds); //locations of poles
+K=temp(1); //first entry is always gain
+disp( K,"Gain", P, "Poles",Z,"Zeros",)
+//------------------------------------------------------------------