Coding Step Respon In Mathlab

It is tutorial how to making listing step Respon in Software Matlab..
1. Open Mathlab

2. File .
        M file
Inside code   exsample

m=2;

b=5;

k=3;

A=[0 1;-k/m -b/m];

B=[0;1/m];

C=[1 0];

D=0;

state_space=ss(A,B,C,D)

press F5 

a =

         x1    x2

   x1     0     1

   x2  -1.5  -2.5

b =

        u1

   x1    0

   x2  0.5

c =

       x1  x2

   y1   1   0

d =

       u1

   y1   0

>> [A,B,C,D]=ssdata(state_space)

A =

         0    1.0000

   -1.5000   -2.5000

B =

         0

    0.5000

C =

     1     0

D =

     0

>> step(state_space)

you get it

And find transfer function you can make it.

>> tutorial_tf=tf(state_space)

Transfer function:

       0.5

-----------------

s^2 + 2.5 s + 1.5

>> 

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