What is Known as Signals

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Signal is a physical quantity that varies with time ,space, or any other independent variable or variable

If a signal depends on one variable is called - One dimensional signal

If a signal depends on Two variable is called - Two Dimensional Signal

Representation of signal by mathematical equation is called Signal Modeling

If one can represent signal in mathematical equation is said to be Deterministic signal

If we are not able to represent the equation in mathematical form is called as Random Signal 

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