Plot please help / plot the domain of transfer function

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Melika Eft
Melika Eft 2020-11-26
评论： Paul 2020-11-27
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
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Paul
Paul 2020-11-27
What do you mean by "the domain?" That's not a common term in this context.

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回答（1 个）

Setsuna Yuuki.
Setsuna Yuuki. 2020-11-27
编辑：Setsuna Yuuki. 2020-11-27
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

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