>> n=7
n =
     7
>> Gp=tf([1],[2 1 n])
 
Transfer function:
      1
-------------
2 s^2 + s + 7
 
>> Gm1=tf([1 n/2],[1 -n/2])
 
Transfer function:
s + 3.5
-------
s - 3.5
 
>> Gm2=tf([n/2 -1],[n/2 1])
 
Transfer function:
3.5 s - 1
---------
3.5 s + 1
 
>> G=Gp*Gm2
 
Transfer function:
         3.5 s - 1
----------------------------
7 s^3 + 5.5 s^2 + 25.5 s + 7