I'm trying to analyze the system
20*e(0.9*s)
-------------
(s+10)
using GNU octave and the control package, but I cannot find the way to introduce the exponential (the exp octave function does not work).
The code I tried to write is
pkg load control
s = tf('s')
g = 20*exp(0.9*s)/(s+10)
but the following error is shown: error: exp: not defined for class
I tried searching the web a bit, without success.
Thanks in advance