Step and impulse responses under the effect of noise or uncertainty

This file demonstrates how the responses of a system change, for small fluctuations of ω and j.

Our initial transfer function is
B
---------------
s^2 + A s + B
Where
A=1.4 and B=1
The file demonstrates the different responses, for +-50% fluctuations on the values of A and B.
So A->[0.7,2.1]
B->[0.5,1.5]
We try 15 different arbitary values within these intervals and plot them together. Then one can check the diffferent settling times, peak responses and eigenvalues.