The input x(t) and the output y(t) of a system are related as The system is _______.

If the input x(t) and output y(t) of a system are related as y(t)=max(0,x(t)), then the system is

Consider a linear time-invariant system whose input r(t) and output y(t) are related by the following differential equation:d2y(t)/dt2+4y(t)=6r(t)The poles of t...