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

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

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Adeoye Yusuf

Posts: 1
Registered: 5/5/13
Re: TRANSFER FUNCTION
Posted: May 5, 2013 12:00 PM
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"Nasser M. Abbasi" wrote in message <km5l5c$4k1$1@speranza.aioe.org>...
> 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:
>
> http://www.mathworks.com/help/control/ref/tf.html
>

USE THIS
=========
sys=tf([num den]);
bode(sys)
step(sys)



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