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In real valued function and complex valued function, time is _______________

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in Signals and Systems by (1.2m points)
In real valued function and complex valued function, time is _______________

(a) Real

(b) Complex

(c) Imaginary

(d) Not predictable

I have been asked this question in a job interview.

The above asked question is from Classification of Signals in portion Signals and Systems Basics of Signals and Systems

1 Answer

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by (42.1k points)
The correct answer is (a) Real

Easiest explanation: Time is an independent variable and it is real valued irrespective of real valued or complex valued function. And time is always real.

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