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+//Example 3.14
+//Partial fraction expansion for distinct real roots
+clear;
+clc;
+//------------------------------------------------------------------
+// Transfer function
+s=%s;
+num=2;
+p1=(s+1);
+p2=(s+2);
+p3=(s+4);
+sys=syslin('c',num/(p1*p2*p3))
+
+//Partial fraction expansion is: sys= r1/p1 + r2/p2 + r3/p3
+//residue calculation
+r1=residu(num,p1,(p2*p3))
+r2=residu(num,p2,(p1*p3))
+r3=residu(num,p3,(p1*p2))
+
+disp([r1 r2 r3]',"Residues of the poles p1, p2 and p3 are")
+disp([roots(p1), roots(p2), roots(p3)]',"Poles p1, p2 and p3 are at")
+disp('k=[]')
+//------------------------------------------------------------------