Fourier Transformation l^2 - x^2

[d2904486]

Hello, I need much help with this task. I have spent almost 3h working on it and still I do not know how to calculate it properly.

The task is: transform a function into Fourier

f(x) = [FONT=MathJax_Math]l^[/FONT][FONT=MathJax_Main]2[/FONT] - [FONT=MathJax_Math]x[/FONT][FONT=MathJax_Main]^2[/FONT] for < -l, l > and l > 0

 

[HallsofIvy]

Hello, I need much help with this task. I have spent almost 3h working on it and still I do not know how to calculate it properly.

The task is: transform a function into Fourier

f(x) = [FONT=MathJax_Math]l^[/FONT][FONT=MathJax_Main]2[/FONT] - [FONT=MathJax_Math]x[/FONT][FONT=MathJax_Main]^2[/FONT] for < -l, l > and l > 0

Okay, how is the Fourier transform defined?

 

[mmm4444bot]

… I have spent almost 3h working on it …

:idea: We can't see where you've made mistakes. If you were to show some work, we could determine what you've done wrongly.

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