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What is the frequency domain?

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in Signals and Systems by (1.2m points)
What is the frequency domain?

(a) Analysis of signals in a frequency range

(b) Analysis of signals in their bandwidth

(c) Analysis of a signal with respect to its frequency

(d) Study of a system in accordance to changes in its overall frequency

I had been asked this question in unit test.

This question is from BIBO Stability & Systems in the Time Domain topic in division Signals and Systems Basics of Signals and Systems

1 Answer

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by (42.1k points)
Right choice is (c) Analysis of a signal with respect to its frequency

To elaborate: Though this answer is a bit confusing frequency domain is defined as an analysis of a signal or a system with respect to its frequency. This concept has emerged from the transformations and the ‘spectrum’ concept.

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