Invertible System The system is invertible if by observing the output, we can determine its input i.e. we can construct…

## Time-Varying & Time-Invariant Systems

Time-Invariant System The system is time invariant if the behaviour and characteristic of the system are fixed over time. In…

## Linear and Non-Linear Systems

Linear System A system is said to be linear if superposition principle is applicable to the system. Superposition Principle The…

## Causal, Non-Causal & Anti-Causal Signals

Causal Signal A signal that does not start before t=0 is a causal signal i.e. x(t)=0, ∀ t<0. A system…