What is the Fourier Transform of f(-x)?

In summary, the conversation discusses finding the Fourier transform of f(-x) and mentions that it is a sum of even and odd functions. The general equation for finding a Fourier transform is also mentioned, but there is uncertainty on how to solve it.
  • #1
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Homework Statement


Find the Fourier transform of f(-x)


Homework Equations





The Attempt at a Solution


The way I tried to solve is
Fourier series is a sum of even and odd functions.
If f(-x) is even then, f(-x)=f(x)
If f(-x) is odd then, f(-x)= -f(x)

Sum of even and odd function is neither even nor odd.
I am lost after this. Any help?
 
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  • #2
Can you write the general equation for finding a Fourier transform? Saying it is the "sum of even and odd functions" is pretty general. I've usually seen the transform as an integral containing a complex exponential or sines and cosines.
 
  • #3
ok.
F(f(-x)) = int( f(-x) e^-i2pift dt)
Not sure how to solve this.
 

FAQ: What is the Fourier Transform of f(-x)?

What is a Fourier transform?

A Fourier transform is a mathematical operation that decomposes a function into its frequency components. It converts a function from the time or spatial domain to the frequency domain, where the amplitude and phase of each frequency component can be analyzed.

How does the Fourier transform of f(-x) differ from the regular Fourier transform?

The Fourier transform of f(-x) is the same as the regular Fourier transform, except that it is mirrored or reflected across the y-axis. This means that the negative frequencies become positive and the positive frequencies become negative.

What is the significance of taking the Fourier transform of f(-x)?

Taking the Fourier transform of f(-x) allows us to analyze the frequency components of a function that is mirrored or reflected across the y-axis. This can be useful in certain applications, such as signal processing, where the negative frequencies may have important information.

Can the Fourier transform of f(-x) be used to reconstruct the original function?

Yes, the Fourier transform of f(-x) can be used to reconstruct the original function. However, care must be taken to account for the reflection across the y-axis, as well as any phase shifts that may occur.

Are there any real-world applications of the Fourier transform of f(-x)?

Yes, the Fourier transform of f(-x) has many real-world applications, such as in signal processing, image processing, and data compression. It is also used in fields such as physics, engineering, and finance to analyze and understand complex systems and phenomena.

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