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How to output symbolic functions?

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Hello everyone,
I am trying to make a function (Gs) in my code, and have the out put Gs with an arbitrary constant K. The code works if I assign K a value, such as 5. However, I would just like it to output the Gs function displaying the constant K. If you can help it will be most appreciated, thanks.
Note: I have attached my code below.
CODE:
clc, clear, close all
K = 5
num = [25];
den = [1 K 25];
Gs = tf(num,den)
-Robert

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Accepted Answer

Walter Roberson
Walter Roberson on 25 Sep 2018
tf() cannot support that at this time, and probably never will.
There are some alternatives, but also some limitations. See the more detailed discussion at https://www.mathworks.com/matlabcentral/answers/305339-how-to-create-a-transfer-function-with-gain-k#answer_236890

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