Date: May 5, 2013 8:51 AM
Author: Sergio koop

Hi, I've been trying a very easy function in matlab but there is one problem that i can not fix  nor understand.

here is de code:

>> den= [0.5 1];
>> num= [1];
>> G= tf(num,den)

Undefined function 'tf' for input arguments of type 'double'.

is there anyone who could explain me what do i have to do to solve it?