Why Is My Fourier Transform of a Gaussian Incorrect?

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SUMMARY

The discussion centers on resolving an issue with the Fourier Transform of a Gaussian function. The user is struggling to obtain the correct result, which is critical for their understanding. The solution involves completing the square under the integral and changing coordinates to align with the standard Gaussian integral. Several online resources are provided for further clarification, including links to detailed explanations and examples.

PREREQUISITES
  • Understanding of Fourier Transform principles
  • Familiarity with Gaussian functions
  • Proficiency in LaTeX for mathematical notation
  • Basic knowledge of integral calculus
NEXT STEPS
  • Study the process of completing the square in integrals
  • Explore the standard Gaussian integral and its properties
  • Learn about the applications of Fourier Transforms in signal processing
  • Review LaTeX documentation for effective mathematical formatting
USEFUL FOR

Students, mathematicians, and physicists who are working with Fourier Transforms, particularly those focusing on Gaussian functions and their applications in various fields.

jaurandt
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Attached is a personal problem that I spent last night working on for about 2 hours and something is going wrong, I just can not figure it out what. The answer by the big X is what I wound up with but it's obviously not correct. Could someone please guide me through solving this? The starting problem is on the top left, the correct answer is boxed on the top right.
IMG_20190508_120613086~2.jpg
 
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Please use the PF LaTeX feature to post your equations directly in the thread. Per PF rules, equations should not be posted as images, as that makes it impossible to quote them in replies.

Help on the LaTeX feature can be found here:

https://www.physicsforums.com/help/latexhelp/
 
PeterDonis said:
Please use the PF LaTeX feature to post your equations directly in the thread. Per PF rules, equations should not be posted as images, as that makes it impossible to quote them in replies.

Help on the LaTeX feature can be found here:

https://www.physicsforums.com/help/latexhelp/

Sorry, I will do so from now on. But what's most important to me is the problem for the sake of my sanity...
 

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