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# What is frequency domain?

**Frequency domain refers to the mathematical analysis of signals and functions based on frequency instead of time.** The representation is particularly essential when it comes to analyzing linear systems. This is because it shows the amount of signal is within a given frequency band over a range of frequencies.

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The frequency-domain analysis is a tool of utmost importance in applications processing signals. This is because it contains phase shift information that is included in each frequency component if the original time signal, together with its individual frequency components, is to be recovered. Areas that use this type of domain analysis include remote sensing, geology and image processing.

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Q:
## How do you find the domain of a quadratic function?

A: The domain for a function is all of the acceptable values for x where the y value is both a real and a defined number. All values of x are acceptable for a... Full Answer >Filed Under: -
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## How does someone find the domain of logarithmic functions?

A: The domain of logarithmic functions can be found by finding all of the numbers that do not make the value of y imaginary. The domain of the function can be... Full Answer >Filed Under: -
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## What is the difference between a function and a relation?

A: A relation is a set of numbers that have a relationship through the use of a domain and a range, while a function is a relation that has a specific set of ... Full Answer >Filed Under: -
Q:
## Where to find examples of identifying domain and range from a graph?

A: Khan Academy and IXL.com have domain and range finding practice math problems. Intmath.com also provides examples that allow users to practice finding the ... Full Answer >Filed Under: