Stability
If a small input does not cause significant changes, the system is considered stable, implying that a bounded input corresponds to a bounded response. For the given magnitudes M1 and M2, we can express this stability condition as follows:
\(\left|x(t)\right|<M_1\) \(\quad\) \(\quad\) \(\quad\) \(\left|y(t)\right|<M_2\) (3)