How to obtain a plot of some complex function with imaginary and real interval

Hello guys,im new on matlab and i need your help.any comment would be appreciated.

thats the my question:

i have a laplace function which is 𝐺(𝑠) = (s-1)/ (s^3+4s^2+7s+6)

s: circle in s-plane with center at −1.5 + 0.75𝑖 and radius 2

how can i calculate the outputs of this function and plot them wrt given input above?

regards.

[KSSV]

Read about imag, real.

[Ertugrul Gazi Cam]

how ? could you please be more precise

Answer 1

[Setsuna Yuuki.]

You can separate in real and imaginary components.

A example :

var = -1.5+0.75i;
realCom = real(var); %only real part
imagCom = imag(var); %only complex part

you can use these numbers as (x, y) coordinates

more info:https://es.mathworks.com/help/matlab/ref/imag.html

more info: https://es.mathworks.com/help/matlab/ref/real.html

[Ertugrul Gazi Cam]

thanks your answer .what would you write as code if you want to plot the outputs in s plane wrt given function in this input domain ? i want to see them and so that understand it basically