Can you explain about the following formulas? in Signals and System

1. What is a signal equation?
2. What is signal in signals and Systems?
3. What are the type of signals?
4. What is the importance of signals and Systems?

What is a signal equation?

A signal is periodic if it satisfies the equation f ( t ) = f ( t + T ) f(t) = f(t + T) f(t)=f(t+T), where T T T is the fundamental time period.

What is signal in signals and Systems?

• A signal is a set of information of data. – Any kind of physical variable subject to variations represents a signal. – Both the independent variable and the physical variable can be either scalars or. vectors.

What are the type of signals?

Two main types of signals encountered in practice are analog and digital. The figure shows a digital signal that results from approximating an analog signal by its values at particular time instants. Digital signals are quantized, while analog signals are continuous.

What is the importance of signals and Systems?

The importance of Signals and Systems is not restricted only to electrical engineering but it is as applicable to all other engineering disciplines, and indeed, in other seemingly unrelated fields such as seismology, economics, sociology, transportation, public and private administration, and political systems.