transfer function input format

is there a way of writing transfer functions in the format (s+1)(s+2) instead of (s^2+3s+2)? thanks

Answer 1

[Star Strider]

Yes.

This works (in R2017b):

s = tf('s');
sys = (s+1)*(s+2)

sys =

    s^2 + 3 s + 2

Continuous-time transfer function.

You have to supply the multiplication operator, or it will throw an error.

[Joaquim Monteiro]

thanks!

[Star Strider]

My pleasure!