Xcos examples from textbooks and for blocksHEADmaster

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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",)

+//------------------------------------------------------------------