Question

What is variant and invariant

Answer 1

A time-variant system is a system that is not time invariant (TIV). Roughly speaking, its output characteristics depend explicitly upon time.


A time-invariant (TIV) system has a time-dependent system function that is not a direct function of time. Such systems are regarded as a class of systems in the field of system analysis. The time-dependent system function is a function of the time-dependent input function.


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Answer 2

Explanation:

the energy from the sun, a lamp, etc. that allows you to see things