Plot please help / plot the domain of transfer function

How can I plot the transfer function of this function B(s)=5s^3+30s^2+55s+30/A(s)=s^3+9s^2+33s+65

[Paul]

Are you sure you typed that correctly. It should probably be B(s)/A(s) = ...

What kind of plot are you trying to make?

[Melika Eft]

Yes you are completely right

[Paul]

And what kind of plot do you want to make?

[Melika Eft]

The domain of its transfer function

[Melika Eft]

Thank you very much indeed

[Paul]

What do you mean by "the domain?" That's not a common term in this context.

Answer 1

[Setsuna Yuuki.]

You can try with tf():

more info: https://es.mathworks.com/help/control/ref/tf.html

fun = tf([5 30 55 30],[1 9 33 65]); %  B(s)=5s^3+30s^2+55s+30/A(s)=s^3+9s^2+33s+65
step(fun)

fun =
 
  5 s^3 + 30 s^2 + 55 s + 30
  --------------------------
   s^3 + 9 s^2 + 33 s + 65