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Math Forum » Discussions » Software » comp.soft-sys.matlab

Replies: 2   Last Post: May 5, 2013 12:00 PM

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Nasser Abbasi

Posts: 6,003
Registered: 2/7/05
Posted: May 5, 2013 9:00 AM
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On 5/5/2013 7:51 AM, Sergio koop wrote:
> 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?

need control systems toolbox:


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